Let's talk about love, opening the heart, and showing real feelings to others.
The limbic system (or mammalian brain, as it is sometimes called) -- the seat of emotions -- is structured very differently from the neo-cortex, the seat of the intellect. This difference is reflected in the Kabbalistic tree of life where between the 'upper' three sefirot of intellect and the next ('lower') three of feeling there is a sefira called Da'at (knowledge).
When moving 'down' into the feeling realm where one really knows and in turn is really known by another, there must be a scary* movement into 'unknowing' because one is handing control from the neo-cortex to the limbic system.
All I can ask of another human (e.g. friend, lover, psychedelic guide) is that they be with me as I move past the threshold of Da'at to the other side.
* In Kabbalah, Da'at, if it is represented at all (in most schemes there is only an empty space where this sefira should be), has a dashed (not solid) circle, implying that before [true, heartfelt] knowing there must be [a scary] unknowing. In other words, the dashed/broken circle represents the breaking of the [stranglehold of the] intellect