Have been seeing BF for 6 months. It is everything a 'good' relationship should be - respectful, equal, kind, supportive, communicative etc. He is hard working, loyal, loving, attentive, adores my DS etc. Physically, I find him very attractive. We make a good team, we are on the same page in most respects. He fits in fantastically with my friends and family, and his/my/mutual friends are pleased as punch that we are together. However... I don't feel like he sets me on fire.
I suppose I felt like I would grow to love him but the more our relationship progresses, the less likely this seems. I have recently broached this with him and we have talked a lot, which has eased the pressure a lot for me and I feel like I am relaxing and enjoying it without worrying about my lack of/feelings for him. He has said that ordinarily, he would simply walk away but he feels like I/we are worth holding out for, to see if my feelings strengthen in time.
I don't want to throw away what could be a fantastic partnership, but equally I would not 'settle' for someone who ticked all the boxes but I didn't love, really love, as this will surely only create problems down the line. I wouldn't want that for my BF either, he deserves to be with somebody who is crazy about him.
I know only time will tell for us, but I am just interested to hear others' experiences.