Abby no, Marshall + Mary yes.
I don’t mean to be a hater but I think it’s interesting the way they have written the character of Abby. To me, she is really annoying! Is this intentional? Everything she says is a perfectly scripted cutesy/clever little line – like… this is what the perfect Marshall Mann girlfriend would say or act like in this situation:… She doesn’t have any depth to her, it’s as if they didn’t really want us to get to know and like her because she’s going to be gone. And that pasted-on smile & corny southern belle accent! Yuck. (And I am from the south!) Is this what the writers were going for with the character? Someone who, on paper, seems to match-up with Marshall really well - book club, board games, etc. So that it’s one of those “he-knows-he-should-love-her-the-only-problem-is-that-he-doesn’t” situations. ? While it’s important to have some common interests, who wants to marry themselves? I hope that now that they’ve specifically NOT made a character we can know/like, they DON’T have the two end up together.
Even though the writers have avoided the will-they-or-won’t-they physical attraction thing between Mary and Marshall so far, it would only take one well-written scene to reveal an attraction that the two had previously buried - trying not to think of each other that way as their lives depended on each other as partners. I mean c’mon - she is very pretty and he is a good-looking, well-built guy… it’s not like they would have never thought of it!