Suicide I need to talk

I'm trying to find a way to talk to my son about what he posted on snap chat so there's this girl he likes that likes him to but I've seen messages where she was telling my son that the guy she's dating is abusive towards her well last week my son came home and was like momma I may have to get into a fight and I was like wait what he was like my bestfriend and her bf aren't talking anymore so her be got mad at him because he's still talking to her well I found out after yesterday when the guidance counselor caller me several times he's posted on Snapchat that he wants to commit suicide so I took his phone because he won't never talk about thing but what I found was disturbing like the kids he's hanging with is encouraging him to become sexually active and they are talki about being pegged so I was like that does that mean he said when the guy takes on the role of the female and the female uses the viberator on the guy so I'm like OK this is weird well the girl he likes has bf but she says she in love with my son buy she's scared of her bf because he's abusing her so my son got upset because she won't call it quits with her bf so he posted he wanted to die for everyone to see it well when I talk to him he always says he just posted it just to post it so I need help trying to talk about this subject to him because he's 14 now and the girls are starting to get his attention but its becoming a problem because he's more focused on girls than school work and then I seen messages about one of the girls being pregnant but he said that's just a game that they play then there's one of his that he jokes with about smash or pass with females at school and I'm just like OK I'm not ready for this yet so I came to y'all help me out sisters