What molecular group or structures, which are not aromatic, have strong affinity to aromatic rings?

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Adam B Shapiro

There is something called a cation-pi interaction, in which positive charges interact with the pi structure of aromatic rings.

https://en.wikipedia.org/wiki/Cation%E2%80%93pi_interaction

Mikhail Nekrasov

Aromatic rings in dyes are frequently hydrophobic or have hydrophobic parts, so you can try fatty acids for lipophilic interaction.