for me, I have not heard any complaints from any women that dated me in the last couple years. The first part is to understand how to give a simple peck on the lips. After that, you can learn on how to focus on clamping your lips down on either their upper or lower lip (gently and passionately). I prefer their lower lip. If you use your tongue, only give a little bit of tongue.
As for too much tongue... never liked it. Anyone who ever tried to give me too much tongue ended up making me gag. They were too offended to kiss me again. I never felt at loss about it anyway.
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Your Aspie score: 130 of 200
Your neurotypical (non-autistic) score: 88 of 200
You are very likely an Aspie