Is the text I was awoken to this morning..actually nah it was "he's f*cking somebody else"

Facts
-My homegirl has been seeing a dude since September
They became exclusive in November
They had problems recently but worked through them
Yesterday dude gave my friend his phone to fix
She decided to go through it
Found naked pictureS (!) and messages from the same girl dating back to december
My friend confronts the dude and he says ..he was msging back and forth with that girl cause a dude was interested in her and she was using him to prove she had a man

Additional info
My friend has met his entire family including his child and spent the weekend with his mother
They stopped using condoms months ago

So I think its clear that he's cheating-my cousin can't figure out why he would give my friend his phone knowing what was on there my cousin is convinced that there is an explanation


I think my friends dude has given the worst cover up story I have ever heard..can anyone top that?