If your partner/lover randomly bought you flowers, chocolates, or a teddy, would you assume their trying to cover up for a mistake? Or could it just be a nice gesture? Does your partner normally do sweet stuff like that or does it need to be a holiday like Valentine's Day or Christmas or a birthday?
I would be suspicious if he/she bought me gifts randomly
It depends on if he usually does it or if he suddenly does it after maybe 2 years of dating. I would not be suspicious, since you should be able to trust your partner, but I would be a bit confused on what brought it on