I always continued to send birthday and Christmas cards once broken up with my Ex's, as we were amicable.
But once they found new partners I didn't think it was appropriate.
My boyfriend still buys gifts and cards for birthday and Christmas for his last Ex. Nothing too personal, just Body Shop for Christmas, although I don't know what he buys for her birthday. Last Christmas, she bought him a gallery print and an antique enamelled sign or something like that.
They live hundreds of miles for eachother so don't socialise anymore but she does see him when she's in the area, and they text, email and phone occasionally. Although it does seem to be at least once a fortnight.
Does this all sound harmless?