Sure it's lonely and hard work being a "single parent". My mom was a single mother with a lower than average income working full time so she understood that aspect. When I talk to him about this he seems to agree that he doesn't like the person he's becoming and doesn't look forward to a career in medicine, but says he can't leave medicine. There are billions of other girls out there who I wouldn't have issues like this with. There are a lot of single people in the world. Yes, because that is generally what is best. Just remember that you chose one another. At the risk of overloading this post, I'm going to copy and paste here, a Reddit comment that I made in this exmo sub the other day. I overheard her once saying, "being married to a doctor isn't what you think it is" and this is what I think she was referring to. Marriage is unbelievably amazing and indescribably painful; I have been at it for 28 years with my soul mate.
We seem to be one two different planets communication in two different languages. It also means that you have to give her something particular to do. Count yourself lucky that your boyfriend is able to even consider going to parties with you even if you don't ultimately make it to them. My wife chose me, but most people aren't so lucky. I get to spend my life with someone who was not raised on fear and guilt and strict gender roles.
Sadly, my ward shuns us. I feel pretty awful about that whole thing. There may be underlying personality similarities, but if the answer to "what shall I do next" is always trumped by a Morman frame of reference for one partner, but not the other, conflict is inevitable.
If you don't mind some slightly off-topic advice, I can assure you that you will meet plenty of other beautiful, interesting women going forward. Accept yourself, and feel God accepting you, and everything else will follow. I say, Follow your heart.