I usually go for smaller lighter girls,but if was attracted to a girl like you and we were hitting it off I would go for you all the way.To me you don't seem that heavy and many times before I have been very attracted to girls like you or even heavier.If you are really concerned with it exercise more even if its just walking and eat healthier stuff.It is hard for me to picture what you look like but I would say yea I would date you,have a relationship, and even consider marriage if I liked you something like that would not stop me from finding love.I have a friend that is quite a bit heavier then you and I pretty much love her if she wasn't married I would want to be with her.Me and her get along really well and always have since the day we met.But I would rather have a girl that is alittle bigger then one that is super skinny and anorexic or bulimic anyday.But yea you are just fine.
your weight reflects on your personality,your self control,how much you care for yourself,your view on beauty,how active you are-everything. being chubby is fine,but letting yourself look like snorlax is over the top,unless you really don't care about the quality of your life,how attractive others see you as-but then you shouldn't expect others to care either,you're basically on a suicide mission.
5'3" and 175lb is seriously overweight. sorry, but I think that would definitely deter a lot of guys. being that heavy says a lot about you. it's something you can change about yourself and you're choosing not to.