ive been gaming one for 3 mos. now.. gotten SO close but i just cant Fclose

invited me over her house, got almost completley naked.. but she wouldnt do it.. this was 3 weeks ago.. she said because the kids she nannies were right upstairs and she was afraid they would wake up and walk out and see.. which was true.
but i think the real reason is bc she said in the past that she didnt know how she would feel around me and her BF. (guilt i guess for cheating) for the past 2 weeks she has been very distant with me.... i talked to her a little bit yesterday, and got the same.. so im just going to freeze her out for awhile.
not asking her to do anything, and see what happens. Honestly i think she really, really likes me.. for over a month we talked almost every day, and for 3 mos. we hung out almost every other weekend.. i think she liked me more than she expected too, and now dosnt know what to do... so shes forcing herself not to talk to me as much.. guilt? idk, her sister who im friends with said she has been acting weird lately too.. so?? idk >?? thoughts??
edit: have to add that the straw man technique does work pretty well.. ill tease her say things if she complains about him like "oh, but i thought you had the PERFECT relationship" then laugh a little.. her attitude changes immediatley.. eyes drop.. and starts complaining even more. OR, when she mentions his name.. im just like "who?? sorry dont know him" lol