You both need to be reassured but it appears to be in different ways. He needs to know that you are thrilled to have him back and you need to know that Helen didn't mean anything but then also why he stayed away. I don't think that you are at a point for a heavy conversation but maybe you could bring up somethings in a light sort of way.

The work has only begun, don't let it just stagnate because it is easier. However don't try to put it all out there at once. You may mention that you do need to talk sometime soon and go with that.

kat

Me-53(and learning!)
S24, S21, D18, D17
Just keep swimming, Just keep swimming. Dory