This is awkward lol

Hey sorry guys I'm obviously asking for my bf. Is it possible to give a blowjob with your retainer on? Or should I take them off? I got braces at 17 and finally got them off but my boyfriend likes to surprise me in the morning with a bj (not sure if that sounds fake or forced but it's neither I don't mind since I get the same treatment back) and I told him that he could break my retainer but he insists that he won't and that it feels better since my teeth are so sharp. It's like invisalign I think haha. Thanks