No spark when kissing? Please help ?

So my gf and I have been dating for 2 months and we are both eachothers first relationship. I like her a lot and she's so pretty and we get along so well and compliment eachother awesome and I know we're a perfect match. My only concern is that when we kiss I don't feel these so called "tingles" or "sparks". We have had some hot make out sessions that turned me on and were awesome just cause it was so hot but the ones that are just normal and less touching and stuff I don't really enjoy cause there isn't a bunch of emotion for me. Maybe I don't know what to expect cause she was my first kiss? Or will It come in time? Or is the spark overrated? I'm not breaking up with her so don't suggest that.. I know that we will last I just wanna address this issue. Thanks for any help! :)
No spark when kissing? Please help ?
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