Is it bad that my guy friend calls me mamacita and he has a gf?

I dunno, i just feel bad. Like he started calling me that when she wasn't around but he wasn't insinuating anything, like he wasn't grabbing me or being disrespectful. But he was flirting. And was it bad that we hung out as well, I went with him and 2 more male friends of his to a bar. but I was the only girl and we were all talking and drinking/flirting. It just felt wrong, am i overthinking/reacting. I'm wondering because if it is, I won't do it again, but if its not a big deal and is normal, then i'd probably feel better.