Giving my BF a second chance

Last Tuesday my boyfriend cheated on me with a random guy who followed him on Intagram. We’ve been seeing each other for about 8 months, and it’s official for about 4. I spent last week ugly crying and trying to rationalize what happened. What hurt me the most was that he would not acknowledge what he had done until I had undeniable proof. This would have been much easier if he had just been upfront about his behavior.

Up until now this has been my healthiest relationship (I’ve been in 2 others). We have matching tastes. I love his friends, and he loves mine. The sex is great. We’re financially comfortable. We own our homes.

I ended up deciding to give him a second chance. I’m still trying to convince myself this is the right thing to do, going against my intuition that this will not be an isolated event. He says he loves me, and I believe him, but love just isn’t enough.

I’m not sure why I made this post. I talked with a couple of friends, and they will support me in whatever I choose. But I still feel very alone making this decision.

Edit: Thank you for all of your responses. It's been a rough few days. I know in my heart I'll never be able to fully trust him again, and I won't live in peace having to always question his every action. This is the tough love I needed, and deep down expected.

I'm ending it. I'll let you know when it's done.