Tongue action

Did the same with my hot older sister. Was up late with her one night, doing a project, and easily looking down her partially-open robe and heaving, 36C tits, as well as hot legs spread out on the floor. We got to talking about her body, as she brought it up, noticing my noticing her, and she leaned over, telling me to kiss her "if I wanted", to see if I would or wanted to.

She knew well, though, that I'd pretty much lusted after her and watched her every move, so, yes, I wanted to lay one on her. And not a soft, let's see what this is like kiss..I wanted to maul her. And did, bending her backwards and supporting her with my right hand while having at her. As she sighed and waited for a break, her lack of breath only got me going more. We traded tongues, scraped teeth, and made a little mess together. Worked her robe fully open as well.

We haven't stopped since.

My sis and I were playing around when I was 14 and she 13 and she asked me if I ever kissed a girl and I told her yer several times and she wanted me to kiss her and I said no but she kept after me and I gave in to her demands and gave her a kiss like I would have my GF. When our lips parted she asked me where I learned to kiss like that and I told her it just came natural to me and then she asked what else came natural to me and I refused to answer and she started in wrestling with me and the next thing I know we're making out like young lovers only to be stopped by mom hollering at us to come down for dinner. I always sat at the table across from sis and she kept blowing me kisses while I tried to eat my dinner and when mom wasn't looking.

After dinner she was loading the dish washer and I cleared the table and when I wiped the table down I snapped the dish rag on Mary's ass and it really snapped a lot harder than I intended it to and she let out a really loud yelp and grabbed when I hit her and she looked at me and told me to kiss it to make it feel better and I said later and she said right now and pulled down her drawers and wow what a red spot and I gave it a good kiss and when I broke my kiss she said another and she wanted me to kiss her ass like a dozen times.
She had just pulled her shorts back up just as mom cam back into the room and we acted like normal kids bickering at one another.

This is exactly how my sister and I became lovers and now live as husband and wife. We were watching a movie together on a slow Saturday while our parents were out and started asking each other questions. She asked me who my first was, I told her it was my best friend's mother when I was 14. I asked her if she'd every given a boy a blowjob to completion and she admitted she liked the taste of cum. I took a dare on my next question and she dared me to kiss her, it started as a quick peck, but she said that wasn't a real kiss so I leaned in and went for the full, deep french kiss. Then she took the dare and I told her she had to blow me to completion. She looked mad at first, but then slid to her knees and dragged by sweat pants down, freeing my rapidly hardening cock. She was a natural at it, taking my full length in her mouth and working her tongue around the head and ridge. It took her no time at all before I was erupting in her mouth, and like she said she took it all, showed me the wad, then made a show of swallowing it down. We didn't fuck that first time, but it wasn't too many days later before we consummated out relationship, then broke up with the people we were seeing. That was 8 years ago when I was a Senior and she a Junior in H.S., we live together now on the other side of the country. I have my masters in engineering and she's working on hers in child psychology. People here think we're married, while our parents think we're being thrifty living together.

Sounds like your sister liked it too, otherwise she would not have kissed you back. Why fret over enjoying kissing someone you love?