you fit into me

I found this to be a very short and very strange poem. At the same time it makes sense. "you fit into me"(1), I see as two people who make sense together, a perfect match. "like a hook into an eye"(2), I see this line though stating not without pain. Maybe this poem is about a love-hate relationship. The relationship may be a good one yet at times it causes pain or heartache. Or my other thought is that the narrator wants nothing to do with a certain relationship because it is needed "like a hook into an eye", meaning not wanted, not needed to live.
JenN