Aselam aleykum
You know, sometimes we have this ideal dream of how the future might be. How our partner might be, how our marriage might be, how our first night might be...?
Trust me on this one, first nights will always be akward. And it doesn't matter if he's a virgin or not, he'll feel akward to. But the truth is, if he'll treat you right, and you love each other, a couple months into your marriage these things won't even cross your mind anymore. Just focus on what is important.
As for the feeling that he wants to marry just for the sake of being marriaged. I think that's actually dangerous. In my first marriage I did the same, I just thought I'll find somebody who's religious, and marry her, and inshaAllah if we both follow our deen then things will turn out ok. This is stupid! Or saying, oh make istakhara and rely on Allah. Well I think that's stupid to. Don't get me wrong, its good to do istakhara, but you still should find out if you two are right for each other! Let me compare it with an example. If somebody would advice you to make dua against being run over by a car, and then cross the street without looking, you wouldn't follow that advice either would you? And again, I'm not saying it's bad to make such a dua, what's bad however is to rely on it and cross the street without looking. Likewise it's good to do istakhara, but it's bad to go into marriage without due-diligence. How does this person work, wath are his strenght/weaknesses is he what I expect from a partner, are we compatible. You need to examine these things.