Should I keep my mouth shut or is this weird ?

So I have a male friend who is gay, we have been friends for 3 years but he’s always been very immature and over the top sexual in front of people. I’ve dated 2 men in the time I’ve known him one of which I’m still with and he’s had a thing for both of them, it seems like he’ll purposely act perverted towards them or talk about sex all the time when he’s around them and I can tell he likes how it makes me feel uncomfortable.

Me and my SO just had a baby and we met up with my friend so he could meet our son, my friend asked for me to take pictures of him and my SO and him and my baby. Well next day I look on Facebook and see a photo collage of my boyfriend, the baby, and my friend as his background! I feel extremely uncomfortable and it looks like they’re together.

Should I bring this up or try to brush it off? This is also a friend I hang out with once in a while, my boyfriend has met him 3 times.