It is the nature of the human disposition to hate him whom you have injured.

That coldness toward a person you have wronged is not a verdict about them, it is a way of not paying. As long as they can be kept in the wrong, no apology is owed, so the avoidance settles in and hardens over months into something that feels like genuine dislike. The longer it runs, the more convincing it gets.

The way back does not begin with feeling differently, because the feeling will not move first. Do one concrete thing, an honest sentence, a debt paid, an admission with no explanation attached. The warmth returns afterwards, if it returns at all, and often much faster than you expect.