✰THE GUY I HAD A "SITUATIONSHIP" WITH HAS A GIRLFRIEND

Ok so basically I need to rant to you guys about these tings. This guy i've been yapping too for about 3 MONTHS I guess has a girlfriend. Is what my friends says, BUT I don't really believe it until I see it, I mean im not really jeolus I'm kinda rooting for him, I just feel kinda of used because I've been talking to him for a while and then all of a sudden he gets a girlfriend and im just left there, I thought we had something. Welp, I'm not really gonna do anything about it if he really does have a girlfriend. It doesn't affect me that much, just makes me empty like the emptiness is just there. But do you guys think I should do, should I keep talking to him orrrrr ghost him since he has a girlfriend