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Hetero sexual life partner. Best friends without being partners.
Can't wait to see Pam, my HSLP, we do absolutely everything together!
by mooct December 30, 2010
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(Heterosexual Life Partner)
A best friend you want to grow old with and will support unconditionally, but no gayness is involved except in joking manner
"Hey are Sean and Jake gay?"
"No, they're just HSLPs"

"They look cute together"
by Levithmong July 08, 2018
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