I'm a squirter??

So, I've never had an orgasm before a couple days ago. I've always been too nervous when having sex with my boyfriend to actually enjoy it, which I know isn't healthy. So I tried a little solo action so I would know what to expect so my anxiety wouldn't get in the way next time I'm with him. Only... I found out I'm a squirter. Should I warn him beforehand? If so, how do I make sure I don't gross him out? How would I even bring it up?