Re: is it...healthy?
I guess its a matter of perspective. I mean, if girls did that there would be divorces left, right and center.
But if a guy keeps his past memories with him, we hear "Get over it, you're not allowed to be mad at us for this!" or "we're too lazy to make you happy, its yahoo's fault for giving us all that space!".
In a relationship, you're only going to get what you give. So, if this is the example you want to set...by all means go right ahead. However, you lose the right to complain when you find cards and such in your wife/fiance's possession that were gifts from an ex.