I´d really get more into this subject. Because I’ve found myself at least twice in the same situation when dating.
There are me and an interesting guy in same group of hobby organization, mutual liking and even some subtle flirting. I think I have made it clear that I enjoy he’s around, we spend a lot time together, not that much alone yet because I kinda take things slow.

Recently he has become even more responsive to my liking and flirting. He’s kind of shy and awkward around me, but we clearly enjoy each other’s company a lot. I’m older than him, and more outgoing and relaxed, and easy in social settings compared to him.

Problem is, when some other attractive chick appears, he stops being that responsive when I try to keep building the rapport between us, and clearly starts to even impress that other chick, being less available to me, even though everything was fine, harmonius between us before the chick appears.

That’s has been immensely hurtful for me, because I have that kind of emotional baggage from previous relationship, trying to build the connection with someone who prioritized other things before me, and even played with boundaries (though never actually cheated), and staying there too long ended up in heartbreak from my part.
That’s why I get really triggered and upset when that happens when a guy who first seems to be with me building the connection, suddenly starts to impress other attractive women around, even though there wasn’t anything official dating or relationship established yet.

You have talked a lot not giving up your standards, but I don’t know what to do here. It seems too soon and too little call him out for this, but I feel too upset that I could keep build that connection with him cause I don’t know if I could ever feel safe enough with him. Evertyhing else was going pretty well between us before this started to happen. Any suggestions?