Intervene in a friendly match? Why? Your partner didn't appear to mind it that much from your description. If it was harassing, yeah, intervene and flex your muscles.
NTRP 3.5 with < 130mph TTW serve | Head Microgel Radical MP (3g split at 3&9, 5g in handle) | Babolat Xcel French Open 16ga @ 58 | Year 2 of playing