Is it normal that for to have your first bf and feel like this

Okay I got my first boyfriend and now I have a funny feeling in my stomach and it makes me not hungry I didn't like him at first then he forced himself to talk to me of which I thought was sweet then I got to know him better and I started to like him a bit cuz I liked this other guy but then he asked to go out and I said sure but long story short is having that feeling normal??? Sorry for if being long kudos to you if you kept on reading