Why is he still lying

mandy

I recently found out two weeks ago my boyfriend cheated on me we with a person that do drugs she is also is a escort and is Older the. Him by 22 years . When I found out and confronted him he act like he didn’t care about what I was saying and how he doesn’t want me now it been two weeks and I changed my number he’s texting me of different social media’s saying he never did anything with her but the lady told me they did and I saw the messgaes in his phone like he is still lying and he saying he don’t know what to do with out me like why can’t he jsut tell the truth instead of keep lying about it we been together for 3 years this is the longest I went without taking to him . He is literally begging me to take him back but still lying about the situation