A year ago I would have said no, weight does not matter.
But a year ago I was miserable and trapped and still drinking the kool-aid.
I was living with someone I still care about very much...but he had gained so much weight that his knees could no longer support him. He needed to lose weight in order to get bilateral knee replacements. He was completely bedbound and I was his full-time caretaker. I fully admit that I was an enabler. I gave him what he asked for in terms of food. I trusted him when he said he did his physical therapy exercises while I was out of the house. I was blinded by my love for him and it was unhealthy for us both. I gained 60 lbs. while with him.
Family and friends begged me to leave him, but I loved him, and I would not give up on someone I loved. I tried giving him healthier food, but he would beg for junk and guilt trip the heck out of me. I would try to get him to do his exercises, but he would have any number of excuses why he couldn't. Finally, I had to admit that he was not doing anything to help himself. He was simply not interested in getting better.
For my own menatal, emotional and physical health, I found a care facility for him and moved far enough away that I can't visit him very often (every time I visit he begs for junk food and alcohol). He is doing slightly better in this facility but has not lost much weight, even though his diet is supervised.
Weight SHOULD NOT matter in a relationship, unless someone else's weight and unhappiness is directly affecting your own.
Now all I want is someone to go swing dancing with.