All advice much appreciated on this one...

Recently my ex found out that I had slept with a guy who is a mutual friend of ours (about 4 months after we had broken up).

He found out because a page from my journal had fallen out in his bedroom detailing that I had slept with this person and he had found it (after I had arrived home after spending 8 days living with him).

He wasn't impressed and says that I really should have told him and that now he questions how genuine I am.

He is my best friend, and I care about him more than anything. My reason for not telling him about the whole thing was because it would have undoubtedly made things awkward between both men;I know that if he told me about sleeping with somebody (even though we aren't together) it would make me quite upset, because I still have ridiculously strong feelings for him, and I was trying to spare him from feeling that way.

He says that the reason he's annoyed is because I didn't tell him; but in some ways I think - he dumped me, we weren't together at the time and it's in the past.

Currently, my ex is not speaking to me and I miss having my best friend to talk to.
I just wanted to know how it all sounds to people who I don't personally know, incase my friends are being biased.

id say its best always to be honest, it may have hurt him at the time that you and his pal slept 2gether even tho use werent 2gether but he would have been able build trust up again as you had been honest with him.

I think the ex still has feelings for you. It could have been any man and his jealousy would have come out.

morale of the sotry is..don't sleep with a mutual friend of an ex.. nothing good ever comes of it.

Sounds like you've been very careless with your journal. Or that maybe you wanted him to know, to see what his reaction would be.
But - even if he's not talking to you - you can talk to him, right? The fact you are back together and he's not talking to you suggests he still cares about you.
Tell him how you feel.
That way you still have your best friend to talk to! (Even if, at first, he won't talk back.)
He finds you attractive and loveable, isn't it likely others would too? Is it just this guy, or would he have been upset if it were any man? Ask him what way you were expected to live while you were apart, after you'd both broken up: what were you supposed to do?
Cunundrums like that drive men crazy!

oops...looks like he still loves you & thus feeling jealous.

So ultimately the question is: "should I put in the effort to make up with him or should I leave things be because he is being silly?"

What is more important - your pride or your best friend?

Thanks for all the input guys!

Me and my manfriend are back on speaking terms now, on the condition that I tell him next time!

As you were still very good friends with your ex .......... sleeping with one of your mutual friends, ,was probably not the best idea in the world ......... but you already know that. Glad your back on speaking terms, as good friends are hard to come by ......... dont ruin it for a quick fumble ...

He's also admitted he's not over me, and I think I'm not over him either. I've tried to get over him, but just end up getting upset.
The only problem is that we live in different citys now, because I moved back to my hometown and he's still in University.



Guess we'll just have to see how things go!