Yesterday morning, my boyfriend had left his phone behind in my car. I didn't find it until i had to drive to work and heard it beep. He recieved a text message from some unknown number. All it said was "My refrigerator went out again, can you come by and fix it?"

I gave him his phone back and showed him the text, which he snatched it back from my hand. I started putting 2 and 2 together, i remembered he's been a little more distant lately. Like last week, i waited up all night for him to come pick me up for a date at the movies, but he never showed up. He told me he tried to call 10 times, but my phone never rang.

That night, i invited him over. I asked him about his strange behavior, he said he'd been interviewing for a new job and meeting up with his new boss and was trying to keep it a secret so he could surprise me in case it didn't work.

I wanted to give him the benefit of the doubt so i just dropped it, but then he just blurted out "I can't do this anymore." I asked what he meant, he said he'd been lying. That, yes, he was cheating. I had a feeling he had and now he just confessed. I asked who it was with, because i was genuinely curious. I assumed it was this girl from his work, i swore i've seen her checking him out. I asked him if it was her, he denied it. He said it was Mrs. Ortega. (She's this woman who lives in his apartment complex, like on the same hallway. She's in her 40's, my bf said she's divorced and lives alone.)

I remember clearly, the first thing out of my mouth was "What?! She's 43! What the hell is wrong with you?" He spilled his guts and told the whole story. That she asked for help getting her new furniture, and just started rubbing flirting with him. That he just lost control and before he knew it, he was in bed with her. He said he's been going over there every day almost for 3 weeks. He started going into detail about how she seduced him and everything, but i told him to shut up.

He said he wasn't felling fulfilled with me anymore. That she gets him. And then he left.

I just wanna know why? Why would he do this? And with someone who's old enough to be his mom?