Suppose you meet a lovely foreigner at your university or work. Or you are on holiday and meet that gorgeous crush. What are your chances for a date or even a relationship?
1. The language problem.
Unless you only want a quickie, you need a mutual language; otherwise it may be a boring date. Body and hand language are quickly exhausted unless you both are trained in it. There are about 6800 main languages in the world, so the probability of you knowing the correct one may be low. Of course, you have the leading languages many people know, but realize that English occupies only the second place, preceded by Mandarin and closely followed by Spanish, Hindi, Arab and Russian. So start studying.
2. Cultural differences in public.
If it's a date in your own country, it's less a problem if your partner is aware, but if you are abroad, study again. Depending on the country, certain things are not done on the street. For example, in some Asian countries, intimate touching is considered inappropriate on public places, even a gentle kiss. I many Arab countries, don’t even dare taking a picture of a female. Also respect the local dress code. In some countries it does not matter if you show up in sport clothes at a date, in other countries it is expected that you dress up (a bit or a lot).
3. Personal differences.
Girls realize that in certain communities, men are expected to take the lead and expose macho behavior. Men realize that in certain communities, it's normal for girls to take the lead and expect to be treated on an equal base. Same for paying the bill at a date (one party or split). Check before you act.
4. Control your hormones.
If it's a university or work relation, OK, it can turn out to be long-lasting. But on holidays or abroad, realize that it may just be a one or few nights out and after that it's finished and remains a nice memory. If you don’t want the hormonal hangover after an explosive holiday love, control your hormones. Enjoy, but don’t believe in dreams (if they come true, the better of course, but let it be a surprise).
5. The foreigner will remain a foreigner.
This is not meant to be negative. Suppose there is a click and you get a relation. Even if you or your partner learn the language and are accepted by the community, speaking will always reveal an accent and lack the tiny differences that native speakers can put in words. Even within the same language, dialects will keep showing up. Try to use it in your benefit.