So in the past my SO has been using chat sites behind my back and flirting with other women. Some he used to work with. That was ages ago and says he doesn't do that anymore.

He has a night out with his work mates, leaves at 7.30pm, texts at 2am to say he'll be home soon. An hour later I try calling and his phone is off. 4.30am he rolls in.

We haven't had sex in 5 days and we usually have it most days.

Should I be suspicious? Because I am, and I know I don't trust him the full 100% like I should do...