<human>: So I started dating a guy around six months ago. He's really great, funny, intelligent, has a good job, seems like a respectable person etc. 
Our relationship is still new but everything seems to be going great - with one small exception that keeps bothering me. 

He hangs out with his ex at his place. A little backstory - she broke up with him 3 years ago and they've remained friends ever since. She has since been in relationships but is currently single, my boyfriend didn't have another relationship until I came along, so I'm his first since his ex. They were together for about a year, maybe just over. 

Anyway, I'm quite a laid back person usually. I don't consider myself insecure or needy or anything like that, but I'm finding myself increasingly bothered by the fact his ex comes to his apartment to hang out with him. It's just the two of them, they'll hang out about once every 2 weeks, they usually have a few drinks and a catch up.

So I'm asking you, Reddit, does this seem at all inappropriate to any of you?
Don't get me wrong, I know some people are friends with exes and honestly I don't want to ever be that girl who tells her boyfriend to stop being friends with other girls. I do trust him, but I still think there should be boundaries. 

I was thinking of asking my boyfriend if he could perhaps meet up with his ex in public from now on, rather than her coming to his place. But I don't know if that would be out of order of me. I don't want to stop their friendship, but I don't necessarily feel comfortable with the idea of them hanging out alone at his place. 

Do I have a right to say anything? Or should I just let it go and suck it up?

Can you summarize the given text in a few sentences?
<bot>: boyfriend hangs out with his ex alone at his apartment. I find this odd and want to ask him if they can hang out in a mutual public place, but don't know if I'm out of order.