Here's my penny's worth:
As said, it could be about the platonic love - of the "best friend", where one just "clicks" really well with another person, as if they were close siblings (or seeing the possibility of that in someone you've just met).
And the older interpretation of The Lovers, is having to make a choice between two paths or "loves". From my own personal experience, I have a particular lovers card that is quite dear and also quite "cuts to the bone" for me, on this subject.
Observe the lovers card from Pagan Tarot (below).
You can see that there is a lady standing at a crossroads... the left hand path leads to her Coven or spiritual family, and the right hand path up-the-hill, leads to her biological family.
She must choose.
I had a similar situation, in which I had to say goodbye to my spiritual family and choose to concentrate on getting myself well (I was ill at the time) and making sure my family were also well (I had become depressed, following my mother's illness and recovery. I realised that I would not be able to function in the Coven for quite some time, and needed to take time-out from everything, plus I also wanted to make sure my mother was settling in well after her near-death illness. Leaving the Coven was leaving one "love" to focus on the other. I could not do both. And it was horrible, because it had taken me a long time to find that Coven and I loved it.).