My best friend was dating this guy for 4 months and it started getting serious (they went on holiday together) but they broke up a month ago because he was doing drugs. He wasn't a great guy but she kept forgiving him because it was his first relationship (she's 19 and has been in 2 serious, long term relationships, he was 28 and had never dated) Her standards are kinda high but she's such a caring and giving person that it's not usually a problem and the last two guys she dated did reach those expectations for her they just didn't work out for various reasons.

From the start I wasn't 100% okay with them dating but I obviously let her be. He ditched her on New Year's <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> (they had plans) and I told her to end it with him because it was one of many things he'd fucked up. He took her on holiday to make it up to her but when they got back he lied to her face about doing weed and turns out he'd been doing it the whole time in spite of the fact she'd made it clear it was her one rule that he didn't do it (she had an abusive ex who was only violent when on weed). I don't completely agree because I feel like it was the ex, not the drugs but I understand and feel like the new guy should have respected that or not got into the relationship.

Thing is she has to keep seeing the guy because we've got a mutual social group that isn't going to change any time soon. I love her to bits but she's constantly wanting to talk about it which I understand but I don't know how to help her. I'm a very forgiving person because I find it draining to hold grudges so all I can tell her is to take time to be upset then move on and be civil with him but she's extremely passionate and still very pissed off about it (passed the upset stage) so she can't talk to him without getting angry which means they aren't talking at all and nothing is changing; she pretends he doesn't exist, he doesn't talk to her unless he's drunk (he's the type of guy that doesn't express his feelings easily), she keeps going on about it to me and all of our friends. It just feels like we're going in circles and I feel awful but I'm so busy and exhausted with studying that it's draining for me and feels like I'm overcoming the relationship with her.

With her exes she completely cut them out and moved on that way but this guy is sticking around and there's no other option so she's going to have to deal with it but I don't know how to help her! I've told her that's the only advice I can give but she keeps asking me again and again and I feel like I need another take on it all. What would you suggest?