You can connect from all kinds of places - 
energetic harmony, 
sexual alchemy, 
intellectual alignment  
but they won't sustain love over a lifetime. 

You need a thread that goes deeper, that moves below and beyond the shifting sands of compatibility. That thread is fascination - 
a genuine fascination with someone's inner world, 
with the way they organize reality, 
with the way they hearticulate their feelings, ^__^
with the unfathomable and bottomless depths of their being. 

To hear their soul cry out to you again and again, and to never lose interest in what it is trying to convey. 

If there is that, then there will still be love when the body sickens, when the sexuality quiets, when the perfection projection is long shattered. 

If there is that, you will swim in love's waters until the very last breath.

jb/ps/smoh