It's likely you're thinking of the song "Dragostea Din Tei" by O-Zone, which became very popular in the early 2000s. While the song itself is upbeat and catchy, some people may have negative associations with it due to its immense popularity and the fact that it was often played to death.
However, the phrase itself, "Dragostea din tei," is completely harmless and simply refers to a love that originated from a linden tree.