If you have found honey, eat only enough for you, lest you have your fill of it and vomit it.
Proverbs 25:16 ESV

Although literally true, this Proverb isn't about honey. It's about company and speech and there are two sides. First, if you have a friend that you really like, don't spend all your time with that one person. Nobody is perfect, and everybody sours with enough knowledge and attention. Second, don't make yourself a nuisance. No matter how charming you are, eventually people will get tired of you.