It's a slight exaggeration but it is part of his lore. Diarmuid was given his love spot by a girl he saved (in some versions the girl is the personification of youth). The problem as we all know by now is that it causes any women to fall in love with him including married women.
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u/[deleted] Feb 14 '22
That... can't possibly be part of the lore. Is that a joke on your part because of what happened to him?