trust issues!

I seriously need help with my trust issues. my current boyfriend of almost 4 years now he's never given me any reason to not trust him. but I have been screwed so many times I just don't want to let my guard down.

just about any serious boyfriend I ever had has lied and cheated.

I texted him when I got to work and he never messages back. well three hrs into work I give him a call no answer... I wait a little call back no answer. Well he Does call back and I ask what's up? he says nothing just play n ps4. why can't you answer the phone ? oh I was out side with the dog. Ok well what about the text I sent three hrs ago? cus you haven't been out side play n for three hrs. oh well my phones been on the charger in the bathroom. ( he charged his phone up to 100 percent right before I went into work???)

I feel like sometimes I just read into things to much but I just don't want to be the girl who got cheated onagain I swear Its like I have cheat and lie to me taped to my back.