Well,Finn din't exactly say that. He just pointed out that it was a fear of Santana's that Brittany might not feel the same way about her. I personally have no doubt that Brittany loves Santana, but weather it is in the same way that Santana loves her, I am not sure.

Santana loves Brittany. Brittany loves Santana. That is all.

I agree with elstef. :] Santana and Brittany definitely both love each other, but I do think they love each other in different ways. For Santana, it's like Brittany's the only one for her, she loves her seriously and unequivocally. Brittany though, she could still wander, and it wouldn't be the end of the world for her if Santana disappeared.

I feel like they do love each other but like Santana's feelings are more intense, passionate and strong than Brittany's, with Santana it feels like deep, unconditional love while with Britt it feels more like a "friends with benefits" kind of thing. :(

I feel that Santana loves Brittany with a passion, Brittany of course loves Santana back but, not as much as Santana thinks.