After months without talking, “I’ve been thinking about you” is a perfectly good way to start.

Months of silence feel like a locked door, and the lock is mostly imaginary. What stops people is the sense that they owe an explanation for the gap, so they wait for a good enough reason while the gap keeps growing. Telling somebody they were on your mind skips all of that and asks nothing of them.

Pick one person you have drifted from and send exactly that, with no apology attached and no reason supplied. If they answer, you have something back. If they do not, you still said a true thing, and that was worth doing.