Why are we attracted to other people even when we've found our 'soul' mates?

Oh God, the crush! What's a man to do???

 

Fantasize about her and masturbate? I don't know, that's pretty much what most people in similar situations would do, isn't it?

I'm in a committed relationship with a wonderful girl who I feel is my soul mate. I believe soul mates DO exist. But that doesn't mean I don't recognize beauty in other people either. I have attractive female friends, I meet attractive employees at a local pub, I talk to attractive people on the internet, so on so forth. But when I interact with these people, not including my girlfriend obviously, one of the following happens:

1 ) it's a purely physical attraction, in which case I actually end up wanting MY GIRLFRIEND more because I know she has way more than just her gorgeous looks to offer.

2 ) it's a purely mental/philosophical/intellectual attraction, in which case my desire is to become their friend but I wouldn't be attracted to them physically.

3 ) it's a combination where I find them both physically and emotionally attractive, in which case I appreciate their physical and inner beauty, and then they somehow make me feel secure in that I don't really feel the urge to pursue anything with them knowing that;

a - in many cases I've already developed friendships with them, meaning that I already have them in my life and that makes me feel content, therefore I see no reason to take things further,

b - my girlfriend belongs in this group except she ranks at the very top, with something that makes her extra special(and thus making her something else entirely...like my "soul mate" I guess?), which makes me feel like I'm a super lucky dude,

c - I'm in a very comfortable state of mind where I'm sure of the way I feel about my girlfriend, and I feel secure in this relationship.

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All this might change years down the road because we don't know what happens in the future. But considering the kind of connection we have, and the very fact that I have finally met someone who I can be myself in a total sense with and who I don't have to hide my innermost secret from, I believe it is quite unlikely that my feelings for her will actually stray. In the meantime, masturbation is good, lol.

That's me, though..... xD