Oral problems

My boyfriend & I been together for a year now . He still refuse to give me oral sex . He has perform oral sex in his previous relationship with the mother of his child. Yet he still refuse to perform oral on me . It’s make me insecure. I never had any problem with men giving me oral expect for him. What should I do ? Sometimes he ask me giving him oral. I do . It was time period where stop giving him oral and he would ask. Just tired of him being selfish lover. What about my sexual needs . I don’t want us break up and I am not gonna cheat on him. Trust I have asked so many times is it me ? He claims it’s not