FemShep has two romances that fail. If you roll straight female characters like I do, because I do self inserts and that means straight female protagonists, then you lose half of your romances. You can call it realistic. Yes, people cheat and people die. As for quality...
The option to tell Jacob's ass off, to tell him off proportionally to the s**t he says and does in the break-up scene, is absent. He blames you for his infidelity because you were locked up for 6 months (BTW none of maleShep's girlfriends moved on), tells you he got his new girlfriend pregnant, wants to name the baby after you, then you deal with the bitchy girlfriend. It was rather galling and I felt the writer of that particular scene was being a bit spiteful. I wanted Shepard to tell him what a low-down, dirty dog he was and defend herself. As a woman of color myself (black) I would have...well i'll keep quiet.
I would have appreciated an actual date-like scene with Thane (since he's going to die in the first half of the game and be gone forever) where I could discuss the stuff he talks about in his post-mortem Citadel DLC videos. I was rather confused that he mentions his son to friend!Shep and non-loyal-to!Shep, but for some reason mentions nothing about Kolyat if he is romanced. I would have thought that given the level of intimacy between a romance!Shep and Thane that he would talk about a lot more than his sickness; like how's your son and how are you two getting along, what were you doing during those 6 months, did you get to see a desert?. Nope had to wait for the Citadel DLC, which I watched on youtube.
[Optional death-Miranda] If you choose to let Miranda die Shepard can tell her he loves her and she to him. [Mandatory death-Thane] FemShep cannot tell Thane she loves him before he dies, and I really regret that. I regret it in the way I would regret not telling a loved one I love them before they die. The prayer is nice and is shared identically with friend!Shep, but once you have fallen in love and made love with someone I think the need to express the depth of that loss is rather important. I wanted her to have tears and/or say she loved him on his deathbed. I only get that declaration of love and tears if I buy the Citadel DLC, and Thane never sees my femShep's tears or hears that declaration of love.
I'd like to see more realistic and failed romances as well. I'd like to see a romance with a character that is deceiving and manipulating the protagonist with sex to some detrimental end. But I hope the tragic or doomed romances are not all heaped on the female protagonist, nor the gay male protagonist should he be limited to one or two romances again.