Here, a speaker is stuck on someone they can't get over. Their eyes have adjusted to not seeing this person's face, but their heart hasn't caught up. It keeps getting lost in the "unforgettable maze" of the other person, a nice image for feelings that loop back on themselves with no clear exit.
The speaker knows the usual advice. Delete the texts, cut the person out, and you'll move on. They even repeat the saying "what eye don't see, mind don't crave." But they admit it doesn't work that way, because the memory of this person's spirit lingers. Real moving on, they say, means letting go of the thoughts themselves, which is much harder than clearing a phone.
The last two lines carry the most weight. The speaker would choose this person again, even knowing it would never feel safe. The mood is wistful and quietly honest, a mix of longing, regret and stubborn devotion.