My wife had a friend over last night for drinks. Her friend is 25 and gorgeous. She walked into the house wearing a very low cut shirt that showed a lot of cleavage. She had a bottle of rum and a few other items in a bag she put in the kitchen.
While my wife and her friend were talking I would steal glances of her tits that were struggling to stay confined to her shirt.
After a few minutes they decided they needed a couple items from the store and said they would be right back. I was already horny from starring at her cleavage and was now alone in the house. I dropped my shorts and began stroking my cock. As I continued rubbing, pre-cum began oozing out. I grabbed my wife's friend's bottle of rum, removed the cap, lowered the bottle and began spreading my pre-cum all around the outside of the top of the bottle and a little just inside. The thought of her friend having my juices on her lips really did it for me. I put the cap back on and placed the bottle back on the counter.
Not long after, they were back. I helped them bring in groceries from the car. On the last trip back to the car I grabbed the last bag and turned around to see her friend standing there with her tits popped out of the top of her shirt and fully exposed to me. I starred intensely at her perfect tits but with a shocked look on my face. She said "thanks for the help" and reached forward to grab the growing bulge in my pants. I didn't dare move. She gave me a couple few strokes, smiled, put her tits back in her shirt and went back inside. I followed trying to concele my large and noticing everyone erection. The night went on pretty normal after that. I did get a few "knowing" smiles from her throughout the night. At some point they decided to drink straight from the bottle. I gave her a few "knowing" smirks back without her realizing she had my pre-cum on her lips. I can't wait until she comes over again.