It could be because of your experiences with your mother and you may want to see a therapist/counselor and discuss it, see if you can get a different general response going for yourself but it could also be that people are all different and each has their own personality and affect us differently; this last woman could have been crowding your space, according to you/what you like. I know my husband feels uncomfortable around his ex-wife that way but not around me when I do the "same" sorts of things; he just didn't/doesn't care for her touch and does mine. It could be you'll find a woman that just feels "right".