The OP did mention, how she'd cheated and then he was checking her phones, and so to look left her worrying about giving any sign of doing it, again. I agree, there can be other reasons, but from my experience, in life and in other online communities, the avoiding eye contact, can come from be badgered relentlessly by a jealous partner. I've spoken, to several ppl, through the years, where it was an 'aha' moment to realize we'd all been doing this, to avoid a suspicious rager.

Granted, it can be from low self esteem and a variety of other reasons. But, certainly, worth asking, when I've seen this looking down at the ground to avoid eye contact behavioral description, time and again through the years.

And certainly, not being argumentative here, with you, certainly far from that, it's just I have felt passionate about lending a supportive shoulder to others who have travelled similar paths.