Having Hard Time Trusting My Husband

i'm having a hard time trusting my husband. i've felt that way since i had my daughter, i just can't trust him at all, in september i caught him on line with some chick and the way he was talking to her he never approach me that way, i always wonder if i will ever see the the side of him that i'm looking for, unfortunately someone else has and it hurt so much sometimes i ask him why he never approach me the he approach her he have no answerl. the way he was talking to her was romantic and flirtatious, for the ten years we've been together he never ever ever ever approach that way that is one, i never receive a type of lingerie from him, when i question him he claim that he don't know my size, when i ask him for money he gets upset, really right now i feel so depress my family don't know what is going on right now, and now he has so many email address and he is very secretive and that kills me inside, i really feel like he don't love anymore being the fact we've together for so long and he was my first boyfriend and everything. I feel like i'm not experience enough for him he talks to other people outside the house more than me and he only tell me stuff he feel like i should know, and sometime when i call him on the phone he always rush me off the phone, right now i don't know what to do when i talk to my friend she say don't leave because i might regret it but right now i'm so depress to the point where i don't hang out as much like i use to anymore and thank God for my daughter because she really keep going