Celegorm cheated Luthien

[Urwen]

I mean, he was quite good with cheating Luthien with his past lover.

Here's my proof for that:

Maeglin was born late in the first age, wasn't he? Aredhel probably got married to Eol just a few months earlier.

But hosts of Feanor and Fingolfin came to Middle-Earth EARLY in the first age. Celegorm is known to have devoted himself to hunting, and Aredhel is claimed to not love anyone. Coincidence? I think not.

There you have it. Celegorm claimed to love Luthien, but his only true love died when Eol cast his javelin...a cheat. No wonder Luthien didn't want him.

Plus, did you ever know he was guilible? His heart hardened approximately in the middle of First Age - just around the time Aredhel died.

And, how is that he thought he loved Luthien? He cannot think that...unless he experienced love before.

And another proof to back it up: Celegorm and Curufin especially hated Eol. Why is that? Because he stole Aredhel from Celegorm, and Curufin was backing him up.

Here. I have lethal proof...from the book, that Celegorm loved Aredhel and lied to Luthien regarding it. But it was no use. Luthien's heart was already given to a person who truly loved her.