He's been lying to me.

I have yet to bring up what I found out. I haven't seen him but I'm waiting to do it in person. I have feelings for this person but our relationship hasn't ever been defined. We've become closer now but recently I found out he's got an active Tinder account looking for a long term open to short thing thing. So that tells me he isn't looking for that long term connection with me then and it hurts. I really want to bring this up I like him so much it's hard to let go but at the same time I'm hurt like what do you want with me then? Any advice you can judge me for this but I still want to work it out. Any advice?