Can a man betray you if he really loves you?

Found out that my bf is talking to another woman for 10 months! Checked his mobile.

Texting everyday, he slept with her 2 times, they traveled together! He even finished inside her! No protection!

Found a text saying “Love you”

Is he just wasting his time with her? Side chick?

Note: I live in a another country! It’s long distant relation! We saw eachother today after a longtime n found the texts!

GENRAL information:

“We talk daily in our long distant relationship, he tell me he loves me. When once I was about to leave him he started begging” and he was depressed!!

How come he can betray me with her??