Need help, is this cum stain?

My wifeā€™s thongs used to look the same after our bull fucked her and used her pussy as his personal cum dump . After a few meetings he insisted that she would not wear any underwear. I became disappointed as I liked to sniff her thongs after she had got home and put them in the wash bin . There is nothing better knowing her pussy had been truly fucked and taking the bulls cum as he wanted .
 
Gf told me that she is going to cinema with her female friend, when I came home she was already asleep and I found these panties in dirty laundry, they were still wet and warm, with a bit different smell than usual. Never ever her panties looked or smelled like this. Do you think it could be creampie stain? I pitched this idea few times but she isnā€™t into this. Thank you for your adv

Gf told me that she is going to cinema with her female friend, when I came home she was already asleep and I found these panties in dirty laundry, they were still wet and warm, with a bit different smell than usual. Never ever her panties looked or smelled like this. Do you think it could be creampie stain? I pitched this idea few times but she isnā€™t into this. Thank you for your advice
Just teste it, to be sure!!šŸ˜