From a woman's perspective.....
1. Talking to other men she just met. Perhaps some light flirting.
Acceptable-men who think otherwise, get over yourself, you know you do it too.
2. Talking on the phone with ex-boyfriends who are now friends.
Depends--a quick talk about arrangements for #3, I see no issue with. Hours-long conversations about the 'good old days', she needs a reality check.
3. Going out with ex-boyfriend + other friends.
No issue-get over the jealousy, it's annoying and makes you look needy, immature and controlling.
4. Going out alone with ex-boyfriend.
Personally I would never do so, but then I have no boyfriends who are now just friends. Mostly because I'm now in a different city from all of them.
5. Going out with ex-boyfriend + other friends to drink and then ends up staying at ex-boyfriends house for a few hours.
Depends-if everyone ended up there, no issue. If it's just her, there's an issue. In any case she needs to be up front with you about it, and if it happens on the fly, she needs to call or text a heads up.
6. Going out clubbing with her girlfriends who you know to be bad influences and sometimes cheat on their spouses.
I dare you to try to tell her she can't go out with her girlfriends. Trust me, it won't go well.
7. Going out clubbing with her girlfriends and dancing with other men.
Not my style, but it is for some. Judgment call I would say.
8. Wearing a ring given to her by her ex-boyfriend.
She needs a reality check.
9. Having pictures of her ex-boyfriend framed in her room.
See #8.
10. Blatantly treating you badly for no reason except that she is on her period.
Depends on how it manifests-is it just zero to grump in 2.3, or is it truly treating you inappropriately? If the latter, reality check. If the former, suck it up, buttercup, we all have those moments, including you.
11. Writing passive-aggressive status updates on Facebook that are negatively directed at their boyfriend.
Immature and unacceptable. This is not how we communicate effectively with each other.
12. Snooping through your boyfriends texts/emails.
Unacceptable if for mistrust purposes. I must confess here that I have gone into T's email to do GOOD things like retrieve the gift wishlist he sent his folks for Christmas, or to contact his suppliers in an attempt to purchase him the gift of something they offer. He owns and operates a golf proshop and I'm just clueless about golf
13. Expecting the man to pay for everything every time you go out.
Depends on the status of the relationship. If you're friends, go dutch. If you're dating, I'm kind of a traditionalist and I sometimes wonder when chivalry died. Having said that, T and I live together, so it comes out of 'our' account for shared expenses. Except for the one time we were struggling and he wanted to take me out to talk things out and try to reclaim 'us'. That time, by his own suggestion, he paid.
14. Getting upset that your boyfriend spends time with his guy friends, playing sports, etc…
There's an extent to which each of you need stuff going on in your lives that have nothing to do with each other. For her, one of those things very well may be 3, 5, 6, or 7, but hopefully not exclusively. If she's doing those, but not letting you do this, she needs a reality check. By the same token, if you're doing this but not allowing her to do those, you need a reality check too.
Notice I didn't say any were grounds for break up. That's always a judgment call in my opinion. At the end of the day, communication and trust are the key to any relationship. If there are any of the above that are going on and you have an issue with it, you have a duty to yourself and a responsibility to the relationship to discuss it with her openly and honestly, doing your best not to be angry or hurtful.