I had a summer fling with a guy when i was 18, 8 years ago. He is tall, strong, hot, and confident and i had fun in those months. He is now a welder building the gate in the building opposite me. I saw him and my heart jumped just like a teenager. I talked to him and ended up flirting a bit and he lifted my shirt and tickled my belly and i felt like i was 18 again. What to do about this?