Loads of malls, shops, cafes to have a coffee and watch HOT Israeli guys go past and in Tel Aviv, being gay is allowed.
There is of course the beach, a great place to see Israeli guys showing off their muscles. There's great restaurants, cinema houses.
Tel Aviv has a great & rich history. If your into architecture, walk around and take in the Bauhaus era/Modernist architecture or visit the countless galleries or museums.
Why not get hold of Israel Ministry of Tourism?!
Great many nightclubs and bars. Allenby 44 and Allenby 58, on Allenby Street are great. Bit pricey, but great.
The other thing about Tel Aviv; is the humidity and the air pollution coupled with the humidity, can get a bit daunting and the city is rather dirty, but if you can live it, you'll have a great time.
Tel Aviv, was just sand dunes and dilapidated old buildings in the early 1900's and now look at it, a thriving bustling metropolis. Getting around Israel, is so much fun, especially on the "Egged" bus service. The coaches are air conditioned, driven by some hot hunk fresh out of the army and they play either Army Radio or "Kol Yisreal" radio which plays nice music.