It doesn't really fit. It reminds me of that bit in interstellar where the female scientist says something like "Love is the one thing we’re capable of perceiving that transcends dimensions of time and space." It just sounds so out of place.
If love was the key, it would have set him free. The system didn't make the protagonist stop loving anymore, his love stops because he gets rejected and then he joins the system for some vague reason. Love doesn't really gets mentioned until 'aftermath' which seems a bit tacked on if you ask me. For me this so called love story doesn't really fit in with the narrative.
If you look at 1984, love flourishes in spite of the system but is then used to crush the protagonist. That makes sense in terms of the over arching theme of the book.