Is this cum on my aunt's panties?

[GhostOfAkina86]

Question:
Is this cum on my aunt's panties?
it didn't smell or taste like cum at all indeed it smelled really nice(like they were never used)
Story:
after sleeping at my aunt's house i woke up early in the morning when no one was home,i got up and went to snoop in the basket of clothes,and oh boy i found a gold mine,a cousin's "xs" size bikini(yk what i mean,but surpisingly new,so i just rubbed my cock around and nothing else...),then i found the used lingerie(i never thought she would wear these)of course i rubbed them well on my cock,i couldn't resist so i licked them like i had to clean them with my tongue,i was shaking for the happiness my heart was beating fast for the excitement(yk that feeling),finally i emptied my balls on them,she would never suspect it since the panties were already dirty.(i just took this photos,forgot to make more of the rest,also sorry for my bad english)