He has joined the fire service and has definitely manned up quite a lot since four years ago. He looks better, and he is stronger, smarter, manlier. I met him up at a bar and we flirted heavily. He tickled my neck and then he lifted my shirt and tickled my belly and I giggled. Old wood catches easily, and I don't want to end up falling for him again and it not working out, how to go about this?