Found him on tinder?!

We been dating for almost half a year and we still haven’t had sex we go out spend time enjoy eachother and he still talks to me and all but not super flirty I asked him if he’s serious about us and he said yes so I found him on tinder woth a fake idk why on earth he has that he really doesn’t seem like a guy to go around hooking up as if that was the case he’d have use me by now as we both found eachother years ago on tinder talked on and off and started dating so odk what to do or think I trust him but why is he on there I don’t get it and it hurts me