When all of these pieces are there, but that spark isn’t, sometimes, we just try to force the spark. We lie to ourselves. We want to want what’s good for us. So, we stick around to see if our feelings can change—evolve.
You take him to an event and ask, “So, how should I introduce you?” and he says, “It’s nobody’s business what we are.” He is again appealing to your desire to not want to impress others. But he’s just getting out of being introduced as your boyfriend so he can hit on other women there.
Don't over think it, just believe it....