The poem catches a quick, private moment between two people. There's "no time to change," and the speaker and a companion undress, which could mean taking off clothes for sex, but the title, "Guises," hints at something more: shedding the roles and disguises we normally wear. The word "change" also plays on this, since the rush to undress becomes a different kind of change.
What follows is a series of "into" phrases. They undress "into the night," "into a young kiss and an answer," "into kindness." Each one makes the act feel less like losing clothes and more like stepping into a new place or feeling. The mood is tender and a little breathless, and the kiss feels fresh and returned.
The last two lines turn inward. The speaker is entering "a variety of occasions" they have not made "with myself." That suggests surprise, maybe even a quiet vulnerability: the speaker is being carried into experiences they wouldn't have arranged alone.