Relationship HELP!

My friend thinks I might change my mind in the future and decide I do want a guy of my religion and culture, because I've always said I want someone in that criteria, and I've also raised doubts about my boyfriend and whether I'd be happy in the future or change my mind if I do see a guy that's my religion and culture.

So what doubts are you having about your boyfriend? Are they about him personally or because he's not your type?

My doubts are to do with the fact that he doesn't speak the same language as me and he isn't the same culture/ religion either. Since I have never dated anyone of the same culture/ language as me, I don't know if I am missing out on anything by wanting to marry my bf. It is not necessarily doubts about my boyfriend, it is the fact that I do tend to overthink and always want the best, I am a perfectionist, and yes I am happy with my boyfriend and he does treat me amazingly and has the exact personality I want in a guy, but because I haven't had that experience dating a guy my culture/religion which is something I really wanted in a guy I married, before I met my boyfriend, I don't know if I will regret not marrying someone in that criteria in the future, when I shouldn't be thinking like that, i.e. if I am married to my boyfriend.

Are you both taking steps to overcome the language barrier? Do you respect each other's practice of religion and have you discussed how that would work with children, if that's in the future? Do your financial views align?

A lot of people are in relationships with someone of another, or no, religion; I am, and I have family members who are. Culture is different, but my boyfriend and I have quite contrasting personalities and our own interests and hobbies; we met because we were in the same line of work. I hadn't been out with someone of my religion or who shared my hobbies before I met him, and i don't feel I've missed out. I'm just saying it can work with someone you never thought you'd be with.