Do I call off the wedding??

[Justonedayatatime11]

I'm so confused. I'm sorry if this is rambling, I just need to get it out. DP and I are due to get married early next year. All booked, paid for etc etc. DP is 15 years older than me, something he wasn't honest with me about right at the beginning but I was prepared to overlook that as he was/is genuinely amazing. Treats me incredibly well, DD adores him, he is pretty much perfect. Or was.
A month ago I found out that in Nov last year he'd been messaging someone else. No 'physical' cheating, but in my opinion it was emotional cheating, disrespectful and incredibly hurtful. I'm not the most confident of people and given that he's the last person in the world I'd have expected to do something like that, I was utterly blindsided.
I don't think he intentionally meant to hurt me so much, but he has and it can't be undone. For the record he is remorseful.
But it's changed how I see him. I know I love him, there's no doubt about that. But I feel as though I've gone into self preservation mode and I've completely shut down when it comes to him. I just can't look at him the same at the moment. I'd hoped time would improve this, but it's been a month and I'm still so wary of him. I feel rejected and hideous and overwhelmingly like I'm not good enough.
I don't know what to do.
I DO love him. He's not a bad person, far far from it. I can only put it down to a stupid middle aged man looking for an ego boost. I so desperately want to be able to get past this, but I just don't know how.

[rosabug]

He knocked 6 years off his age because he was looking for younger women - no other reason. So he bagged a younger woman and is still flirting around. Mmmm..... Don' think he sees you as an equal. A man who was truly interested in an equal partnership would not be looking for such a considerably younger partner.