1/4 © @jlo

"You are the best, Papi, you are the best," Jennifer said to her boyfriend after he praised her performance. 

2/4 © @jlo

Fan Numero Uno: Alex has joined Jennifer´s tour and can be seen on many occasions cheering on his famous girlfriend.

3/4 © Getty Images

Both married to others at the time – Jennifer's husband was Marc Anthony – neither of them had romance on their mind when they met at Shea Stadium in 2005. Still, JLo recently revealed, they both felt a "weird" electricity when they shook hands.

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