The poem is a single line, and its power comes from how little it says. The speaker admits that they can't look someone in the eye anymore. We aren't told why. The word "now" suggests something has changed: there was a time when looking at this person was easy, and something has happened since. The word "even" makes it sound like the last straw, as if other things have already become hard and this is simply the most basic one left.
Eye contact is how we show honesty, closeness, and trust, so losing it hints at guilt, shame, or grief. The poem doesn't say which. Judging by the wording, the speaker may be the one who did something wrong, or they may be overwhelmed by feeling. The mood is quiet and heavy, with a sense of distance opening up between two people. Because the line starts with "and," it feels like the end of a longer thought we've walked in on, which leaves us hanging in the same uncomfortable silence as the speaker.