Lol when she mindlessly grabbed his arm because of habits. Haha things like that will happen when you're happy and comfortable/relaxed.
When I was little, my family was queue'd up at a restaurant. The line moved forward but I wasn't paying attention. I thought my dad was still beside me. I remember I was going to tell him something I thought was funny. So I said, "ππblah blah blah, Dad?" and I grabbed the hand. Then my little happy self looked up and that was NOT my dad. We were both like WTFFFF...... I saw my dad up 2-3 spaces and ran up and grabbed his arm and didn't let go lol.