How do I approach this??

Here’s my dilemma because now I feel I’m in an awkward spot and don’t know how to address this situation to him. Long story short, guy that I’ve been talking to for two months came out to visit me last month and we hit it off right away and agreed to hang out again this coming Friday (we’re 5 hours apart) We talk mostly daily via text or social media. Well, I haven’t heard from him since Thursday after saying his weekend plans sounded fun by jet skiing with friends. fast forward today on his Instagram stories, he’s with friends, him, his buddy and this girl I’ve seen tagged with him before in a previous story a few weeks ago and I’ve been getting suspicious vibes. I’ve snooped her Instagram before and all she posts are bikini pics either with her boobs or ass hanging out or just constantly attending parties, major party girl/beach bum vibes. Anyways him and her rode together as there was only 2 jet skis, and both were taking turns being the passenger and kinda looking like a couple all up close with each, arms around waist (yes I know when jet skiing to hold on). It was a turn off to me because the way I view it is here’s this guy who claims to be interested and have the same views as me and is to visit, but just a few days prior has his arms around this girl close up with her in a bikini. Could they be platonic? Possibly. Could she be lesbian? Possibly. Could he just be straight up dumb and not think much of it? Possibly. Or are they FWB? Possibly. The list goes on. Anyways, after seeing what I saw it’s given me mixed signals on where I stand with him and I don’t think him coming out to visit is a good idea as I now kinda view him in a different way. I’m not even bothering to reach out to him and will let him come to me, again idk how to bring this up to him if he acts like all is good without him thinking I’m some jealous crazy person. I’ve been down this road before and don’t want a repeat. I’m entitled to feel confused, uncomfortable and protective of my feelings/emotions and don’t want to feel I have just wasted my time or was given false intentions. And for the record NO I am not insecure, I just have standards and certain expectations. He can do as he pleases but I’m gonna remove myself if he is a guy who has several girls

Edit: him and this girl recently connected and no she is not a family member.