My wife works out of town frequently?

she doesn't return phone calls or texts, i find out through facebook posts that she is out partying with her friends at bars, i get upset, worried that i cant get in touch with her, then i see the posts, she says i always get upset when she is out of town. i claim she doesn't respect me enough to inform me of her actions, and if i did what she was doing, she would go through the roof. little to no affection from her, in spite of all my efforts in being loving, caring, affectionate. she went one weekend with her sister, told me exactly where they were going and at what time they would be back and that she would call when they got home. an hour after said time, i called, she answered and said they would be home within the hour and call me, she did..... no problems. our sex life is null and void for the most part, and she usually avoids any kind of physical contact with me. told me yesterday that she is not going to do ANYTHING to me that could lead to sex?????