Is it normal that i want to be with my “gay” best friend?

About 4 years ago I met my now “gay” best friend. I say “gay” because around 2 years ago he told me actually he is bisexual and that’s significant to me because of how I’ve been feeling lately. Over the past year we have gotten increasingly close and as he says, our friendship has upped levels. He’s that type of guy who jokes about absolutely everything, especially to avoid uncomfortable situations or dealing with anything that involves his own feelings but just in general, he jokes about everything. We haven’t always spent time with one another but we’ve both agreed we definitely should make more time for the other person. As a result, we’ve been walking around late times at nights just talking about anything and everything and mostly nothing at the same time. Sometimes we’re walking past midnight just because we don’t have any other time to see each other. Often we joke about how we’re both unsuccessful with romantic relationships therefore, in the future, we will probably end up being old and married to one another to save us the hassle and often enough just jokes of that nature. He isn’t the most “attractive” guy and I know a lot of people would actually say he’s unattractive but recently I’ve been finding a lot about him attractive and I can’t help it. I’ve been brushing it off but tonight was one of them nights that we walked and talked and laughed and it’s tonight I realised that I may actually have feelings for him beyond the “jokes” I’ve been making with him. Not too long ago he told me he’s come to accept that he doesn’t want to date anyone but he wants someone to do the dating sort of things with just without the label. I want to be that person but I don’t know if it’s because I want to actually be that person or because I want to be that person just to push his boundaries of not wanting to date someone and see where I can lead us. Sometimes I feel like he says these things to see my reaction and other times I don’t think anything. I kind of feel like we would be good together because we balance one another well but I know if I ever told him this he would probably laugh and think I was messing around. What should I do and is it even normal that I’m feeling these feelings