I really felt compelled to respond in this thread and I'm going to be fully honest with you. I had to post something because reading this thread was so disheartening.
I felt a lot of anger, a lot of stereotyping, etc. and I don't want to sit here and let some negative accounts put thoughts into your head about YOUR relationship.
I'm Igbo and I'm not going to deny how a lot of parents are in our culture, a lot of them (not all) prefer us to wed another Nigerian. The thing is, a lot of us who have spent a lot of time in America are dating Americans and may end up marrying Americans because it's what we're used to and there's nothing wrong with that.
I honestly don't think he's trying to play you or discusses you with his father as a 'conquest', I do think this guy wants to be with you. We don't discuss 'conquests' with our parents, don't feel that way. Fully. I think the reason he's not saying anything to his mother much is because she's probably the harder one to deal with and
doesn't want to hear her mouth right now, especially since he's not done with school. See, his father knowing about you is way better to me, because as the son, he is informing his FATHER, who plays a huge role in the family. Believe me.
This same thing happened with my cousin, and he hid his relationship to an American woman for a while and then he proposed. It was tough for my aunt and uncle. My aunt was against it at first, but eventually discussed with my uncle about it and now things are going smoothly. In my opinion, this dude wouldn't even waste his time, I do think he really cares about you and is trying to protect you from the hassle you may face while he is still in college. In my experience, most Nigerians date for purpose, not just for dating's sake. I say don't make any rash moves, just continue being the good girlfriend and student you are and in due time, things will progress.
I know this is annoying but it is what it is. When you date a Nigerian, this is what you sign up for, you know? I think in regards to marriage, just keep in mind it may not happen as soon as you'd like. Talk to him about where he stands and ask for the real deal on the entire situation, because only HE can tell you everything, don't base everything off what you read from this message board, every situation is different.