"Lenina's relationship with John brings her to an emotional, physical, but not intellectual experience of love"

An "intellectual experience" refers to an experience or understanding that is driven by thought, logic, and reasoning rather than by emotions or physical sensations. In the context of love or a relationship, an intellectual experience might involve deep conversations, shared interests, mutual understanding, and mental stimulation. It might also entail understanding and appreciating the other person's mindset, values, perspectives, and ideas.
Thus, saying "Lenina's relationship with John brings her to an emotional, physical, but not intellectual experience of love" suggests that their relationship was characterized by emotional connections and physical intimacy, but lacked intellectual depth or stimulation. It might imply that they didn't connect on a deeper intellectual level, maybe due to lack of shared intellectual pursuits, deep conversations, or mutual understanding on a mental level.