GiT makes a good point and I know several foreigners who have taken the abortion route in Taiwan to "get out of their predicament/responsibility". However, I know a few who bit the bullet. Some are happy, some aren't. Then again, I know legions who have dated for ages, planned their marriage and planned their children. Many of them are miserable and/or divorced. There are no guarantees either way.
When I met my wife she was 20 and I was almost 29, single and loving it. I was living the single life to the max in Tainan and often had more than one girlfriend on the go and I didn't discriminate against foreign girls either. So originally our relationship started out in that vein, i.e. nothing serious, casual dating, booty calls, whatever we felt like.
She, being as young as she was wasn't interested in anything too serious either. The only difference was that her family liked me from the get go. I first met her mum at the Tainan Lantern festival when we went there, totally randomly. She liked me from the get go.
I enjoyed spending time with her and as time went on it became more serious. After a particularly nice Kending getaway weekend we found she was pregnant. Actually, I cottoned on to it as she didn't want to tell me and was actually planning on having an abortion or just disappearing.
I'm not a fan of abortion in these cases, because I feel if she's good enough to roger, she's good enough to marry. This is just my own personal take on it (I have other reasons for being anti, also), but I wouldn't look down on someone who decided to go that route. To each his/her own. Just not with my child. And I also had a premonition it might be a boy and I had these visions of tossing a ball around with him, teaching him to fish, things like that. I sat her down and laid it all out for her. The pros and the cons and gave her options, but I asked her not to have an abortion. I also added that if she didn't want the child and/or didn't want to be married she could just give the baby to me. But I added that I'd prefer to marry her. She was 22 at the time and I was 31.
I left the decision up to her.
Her family felt she was too young to be married or have a child, but her mum (the awesome woman that she is) left the decision to her, and said she would support her either way. Having said that, it should be obvious that her family, and especially her mother aren't the average in-laws/Taiwanese family you sometimes read about here.
Eventually she decided to keep the child and accepted my marriage proposal. We then went through the arduous process of getting married here (Taiwanese to a foreigner) and we were under a time limit because I didn't want my child being born before we were married, as in that case (I'm told) the father isn't recognised as the child's parent in Taiwan. Fortunately we got everything done in time and got married on 11 February 2007. I was 31 and she was a few months short of 23. Here I should mention that I didn't know there was such a large age difference at the time, because she was fairly mature for her age and I just assumed she was around 26 or 27.
Three years on we're still going strong and our relationship keeps getting stronger. However:
a. After about a year of marriage we went through a very rocky patch and nearly got divorced. I posted about it here
b. Marriage under any circumstances, even same race, religion, nationality and cultural relationships are difficult at best. Marriage is tough. But with marriages between partners with significant age differences, different native languages (especially when both parties aren't exactly fluent in their partner's language), different cultures, different religions, different nationalities and from different races it is hugely challenging. On many levels.
Point is, if your marriage and your partner are important to you, you need to work hard at it. Compromise. Find ways to communicate. We have most of these differences in our marriage and it's been very challenging. Added to that, I can be a selfish prick at times, not always patient and I'm generally difficult to live with. My wife is very independent minded and strong willed. We've had huge fights but I think, in the end, they've led to us growing closer together and learn to understand each other better. Again, her mother has been a huge help and has often provided an ear (I approached her on a few occasions, she doesn't meddle) and an objective outsiders opinion at times.
c. My family is 16 000km away. Unconditional love and support from her family (especially her mother) and their unconditional acceptance of me and out relationship has been key.
d. We allow each other to have an occasional night out with our own friends and we allow each other the freedom to explore each others own hobbies etc.
d. We make an effort to communicate our feelings about things and why we feel that way.
e. We make an effort to take time out together with things like date nights. Again, help with practical things like babysitting from her family has been a huge help.
f. We show interest in each others interests. Example: I'll watch silly Taiwanese game shows with her and she plays rugby pick the scores on the internet with me, and goes along to rugby games and bbqs. She even has a Springbok jersey and pretends to be interested in the games.
g. When she first moved in with me after we decided to get married she lost her job (because she was pregnant) and I had to take on extra work as I had promised to keep up her car and study debt payments. Not to mention the added cost of a baby! I had to bust my ass seven days a week month in and month out with no vacation for 18 months. But after she started working again she paid for all of us to go away on vacation for a week as a kind of birthday gift for me.
In conclusion, sure, it would've been way easier to have an abortion. However, besides my feelings on the subject, I don't think people realise the negative psychological effects that such a procedure has on a woman, let alone a young girl of 20 or 21. And it would've been equally easy to get divorced after the going got tough during the first year.
But now, looking back, I have no regrets. I have a wife who I love to death and I can't imagine life without her or my son. For me, the hard work and the sacrifices have been well worth it to come home everyday to two people who love me.
Additionally, the positive and supportive attitude of her family and especially my mother-in-law have played a big role. I would be very worried about that aspect and would find some way to get them onboard if you were to decide on marriage.
The OP needs to really consider everything carefully and make a decision with his girlfriend that both of them will be able to live with. I hope my experience helps in some small way. Good luck.