[Eomer of the Rohirrim]

Celeborn sure had a good time of it!

Anyway, he could not possibly feel threatened by Gimli. He was an utterly different species for crying out loud. If anything, Gimli's actions would have made Celeborn feel even better. Married for all those years and guys are still drooling over your wife, that would make any Elf feel good.

But, if I can avoid being silly here, I am going to agree with Imladris about the type of love on display. It was not that kind of desire.