Always

Sherlock Holmes to Bon Jovi via Severus Snape.

3 characters totally unrelated.
1st one - A Fictional detective (though there are many convinced he does exist)
2nd one - one of the biggest pop stars on this planet
3rd one - the most enigmatic fictional character ever created (IMO)

Now how did I get connect this trio?

I was watching Sherlock (the BBC series). Its a modernized take on the Arthur Conan Doyle creation set in the 21st century. (In my opinion a simply Bloody Brilliant one). Now while watching the series realized that Benedict Cumberbatch (the actor portraying Holmes) sounded pretty familiar. In fact he sounded like Alan Rickman's portrayal of Severus Snape in the Harry Potter movies. 

Did some Google research on the subject. Landed up on a set of videos where Benedict Cumberbatch was actually mimicking Alan Rickman. Also found that I wasn't the only one who found the voices similar. Check this combo video)

Related videos sent me into the Harry Potter World. Lots of fan made videos on Severus Snape. A few on Snape's love for Lily Evans which were a compilation of scenes from across the Potter movies. The background track playing was Bon Jovi's Always. A catchy sound track with lyrics which seemed to have been written for this story. (Funny how I had this song in my music collection for years but never listened to it). 

And since then this has become my favorite number.

P.S. Found this interesting line as well: "Dear Romeo, this is how you die for your love, Regards, Severus".