Should I give my cheating boyfriend a second chance?

[Sassy]

This was not an isolated incident, he would still be seeing (and still maybe) this woman had you not snooped around. It is hard to say he had no feelings for the woman if he had been 'dating' her for 8 months and she had no idea about you, not to mention the fact that he had planned on seeing her on valentine's day. He has told you exactly what you want to hear (it meant nothing, he did not love her), but it went on for 8 long months.

You wonder if he will ever cheat again?!? Well he cheated on YOU for 8 months, and he cheated on 'the other woman' for 8 months since she thought that SHE was dating him. He just does not want his world to change, he is hoping you will be naïve, believe him and sweep this under the rug. He may also be telling her he broke it off with you to see which girl gives the best offer.