Swollowing

This guy im talking to said maybe we arent compatible bc i wont “ swollow his cum” and wants to throw away the possibility of a relationship bc of that one thing . I had 2 bad experiences and dont want to go thru that again. Iv done other things that iv never tried with him. I would think he would keep that in mind when acting this way over one thing i dont want to do. Am i wrong? Or should i do it just to please him. I really like him but idk i just wanted to know yalls opinion. Ik i sound stupid ☹️