Why do I feel my life is an emotional rollercoaster?

I am not an “emo.” I’m the kind of guy that get down and dirty with his work. has cuts on his hands from cutting wood, but keeps a clean shave to keep up with my beautiful girlfriend. and in speaking of her I have been bombarded with emotions over the past month or so. I have found that it is better to find certain aspects of her life and the way she reacts to those aspects to gauge how she is feeling, or if something is on her mind. some ways is sex, how much of each type of contact we have and what interrupts each type of contact. I remember the last time we had sex. but dont bother asking the date its too long back. any time I try initiate any type of intimate contact “ kissing, full on sex, oral sex, and little things like “”fingering”” or kissing her body. arms legs chest back thigh. things like that.” I feel her withdraw from me. we used to do things like sneek me into her room at night just so we could hold each other and fall asleep. and she has lately felt the risk is too high and not worth getting into trouble. I’ve gotten one complement of any in the past few months. I complement her all the time. I tell her she is beautiful, sexy, cute, she even catches me getting lost in her smile or the biggest thing her eyes… to die for. I spend all day just watching her. and I know she loves it, she always laughs and tells me im silly, with the occasion cute. and I love those types of complements. but with less physical contact I find myself fishing for more intimate complements or even more in general. I come up empty handed every time. my cell phone hasnt been very loyal lately so sometimes I have to call her at the end of the day because I cant send out texts during work. and at the end of every day its what I go home to. the ability to call her and hear her voice. the most amazing thing I have ever heard, specially when I catch he singing because she forgot I was on the line. “ sometimes we dont say much and its just nice knowing the other person is there, or even if later you think of something else to talk about.” not to often though. but lately she is busy with something. she always tells me how sad she is we cant talk through out the day. or how she hasn’t seen me in a few days. but she will go to a friends and stay a few days and we wont talk because we cant really talk while she is staying at a friends. and while she is at the friends we will text. but its every twenty minutes that I get a text. understandable she is at a friends. but every other text is about how she is sad we cant talk”voice to voice”… these things dont make sense. I feel I dont get anywhere near the amount of complements back that I give her. and I dont over load her with them either. and I dont really understand this game she is paying.. what is your view of whats happening? or possible causes?