I broke up with my SO last night

I am feeling very down today, I went online and found that he was still using his daying profile app. It even tells me on the site when he was last on there etc. Apparently he had to cancel our date last night because his grandfather was in hospital because of a heart attack. He gave me this long winded story about how sad he was etc then when I checked his last login time it was apparently when hos grandad was in hospital. He lied about it so he could go cruising around on POF. I called him out on it, told him I knew what he was doing and his reply was that He's not on there and the websitr just wasn't updating itself and then five minutes later his account was GONE. I said to him "just how stupid do you think I am? We are over! I know what I know and I'm not changing my mind' so he says 'you know nothing'

I am honestly. . Heartbroken. I feel like crap today. Don't want to socialize and I just really didn't think it was going to affect me this much 😧

I am so greatful I was finally strong enough to get rid of his cheating ass especially because he was going to move into my house next week. But seriously. . I just feel used. . .and stupid. . . I should have trusted my instincts from the start because I never believed anything he ever told me but I convinced myself that it was a me problem and not a he problem. Well hes gone now. But I feel really sad :(