Maybe she accidentally behaved in a way that you subconsciously desire in women. This could be a lot of things, and I can only project based on my own experience. How old are you and how experienced are you with the opposite sex? There is such a thing called "limerence," which is when someone is so overwhelmingly and illogically attracted to the opposite sex. It's most prevalent in teenagers who have a naíve and inexperienced view on love, and typically lasts about 18 months.
It's hard to say honestly. The tongue by itself as the reason for arousal is sexual, but there could be more to it. Maybe thw tongue hanging out magnified certain aspects of her personality that you already know and something 'clicked.'

If I knew this answer to this question, I could have probably saved myself a lot of trouble in my life.

At 11/30/15 12:08 PM, Deshiel wrote:

At 11/30/15 12:06 PM, TailsPrower wrote: Who says you can't be both? But in all seriousness, sounds like your dick's doing the thinking for you here.

That must be the case because I wasnt interested in her before the tongue.

That's probably the case then. Just jack off to the pic and then you'll start thinking clearly.

At 12/1/15 05:59 AM, Mismo wrote:

At 12/1/15 05:46 AM, Deshiel wrote: There are things that I do not give for free.

I'll give you 100sek for a peek.

That's nothing, I'll give you a 1000sek and 10,000kek for it.

You're in love

with her tongue.