While I can’t tell you whether or not a guy is into you, I will say the the fact he’s making out with you is a better indicator that he IS than his lack of a throbbing love-spear is that he ISN’T.
To better illustrate my point, here’s a list of things that have led me to an erection this month:
-Getting a sexy pic of my stunning, witty, love-goddess wife on my phone.
-Any number of other attractive women I may see or interact with.
-The abstract idea of women in general.
-The little picture of a woman on the ladies’ room door (girl’s got booty for days under that skirt, I just know it).
-The girl with the lazy eye who asks for change outside of my office.
-A chip bag that was kinda folded over in a way where it looked like if you put your wiener in there it might feel all right.
-Someone in the next cubicle saying the word “Regina.”
-A banner ad for humorous t-shirts.
-The song “Abraham, Martin and John” (I really misinterpreted the lyrics).
-Writing this list of things that have given me erections.
And here are things that SHOULD have given me an erection, but inexplicably didn’t:
-A solid hour at a crowded concert pushed up against the rear of the hot girl in front of me.
-The stairway sex scene from A History of Violence.
-Making out with my stunning, witty, love-goddess wife.
-A comely nurse fondling me for totally legitimate medical reasons.
-The time this drunk girl with tig ‘ol bitties flashed her hoo-hahs right at me.
-My erection-giving machine (patent pending).
The point being, an erection–or lack of one–is not a reliable indicator of pretty much anything but blood flow, and I’d hate it if my partner was divining the nature of my feelings by the movement of my junk.