Emotional cheating? I'm heartbroken.

Two weeks ago I discovered messages on my husbands phone. He fell asleep with his phone in his hand and when I grabbed it I noticed a WhatsApp message from someone he had added to his phone under his cousins name. The message said "I love you, I miss you, I can't wait until the 12th of November so I can kiss you and hug you." I sat there in total and complete shock. My husband was scheduled to go to Mexico on November 12th to apply for a visitors visa for my 7 year old step-son. I opened his phone and looked at his WhatsApp & noticed he had been calling her, sending her pictures of himself, telling her he loves her.

I recognized the picture she had uploaded to her WhatsApp. A long time ago when we first got together, he had shown me her on Facebook. He told me she was his first love. They dated in high school until she left him for another guy. She's married too. Around the middle of October she had accidentally liked a picture of my husband and I on Facebook. I waited a couple days until I asked my husband why she's liking pictures on my account. He said it was probably just a coincidence & that she was curious about what became of him. The very next day after I confronted him, she unliked my picture. He said that was a coincidence too. My stupid self believed him because we've been together 5 years and he's never given me any reason not to trust him.

Nothing physical happened between them. They haven't seen each other since they broke up in high school. They had planned to meet up. But I discovered the messages before anything happened. I kicked my husband out for 4 days. My husband begged me to stay with him. He said it was a big mistake that he loves me and wants to be with me and this will never happen again. I took him back after the 4 days apart and he's given me complete access to his phone, disabled his Facebook, and we're going to change his number today... but I'm struggling. I see women on here who forgive their husbands who have done a lot worse than mine did. I cry every night. I feel insecure. I don't have any trust in him at all anymore. How do I ever get over this? Or should I just leave? Should I move on? I'm extremely hurt my heart is broken-hearted . I've done a lot for this man. I've taken care of his son like he was my own. I got my husband a green card to stay in America. I bought his mom brand new kitchen appliances because hers didn't work.