My boyfriend can't make me cum

Alayna

I'm have a serious problem of my boyfriend not making me cum. I can do it by myself when it come to masterbation but when it comes to oral sex it's like I feel nothing we will do plenty of making out and I do get very turned on but he goes down on me and I can't cum I don't feel anything after awhile I'll just fake a orgasm

Should I tell him?