<human>: Can you provide a brief rundown of the text in within 3 sentences?

I've been with this guy. for about 6 months now. We dated for about a month before he asked to be exclusive. Things were going great initially, as most budding romances do, but lately I'm wondering if my feelings have been fleeting. He's been wonderful to me, and we get along great, but I don't seem to feel a spark.

I feel conflicted, this is probably the best relationship I've been in in terms of it being the healthiest (my last relationship was an abusive relationship ending in my arrest when I defended myself against him).  All of my previous relationships were involved with guys that were addicted (drinking, smoking weed, etc) or cheating. My current boyfriend doesn't drink, smoke, and has never cheated.  

Part of me is wondering if I'm bored because I don't have the 'excitement' of being in a terrible relationship. Lately I've been thinking about all of the things that I don't like about him, but I'm wondering if that may be symptomatic of the fact that I'm bored.  I mean, am I just bored with this particular man or is it possible to have a healthy, honest relationship with a man that I feel passion for at the same time?

Honestly I don't know if I'm being selfish and I should break up with him so he can find someone that feels just as strongly about him as he does with me, or if I should take a look at the relationship with a new perspective. I don't know if love and passion grow over time but if I have become turned off 6 months in I'm wondering if I should end things.
<bot>: Currently in the healthiest relationship I've ever been in after a string of very toxic relationships, but I feel bored and hyper-focused on reasons why we should break up.