There are 3 ways to tell. One is the smell, if it has a bad odor its bad. Another is the color, if it is an odd color like green or yellow its bad. The last is by looking at the consistency of it, is it slimy, its bad.
sniff it
Their are several trusted websites you can use to find more information on refrigerated trucks such as refrigeratedtrucksandvans.com or trophytrucks.com.
There's no way to tell without knowing how long it has been sitting unrefrigerated.
The smell
How you can tell if raw beef is still good to cook will be by its' smell and appearance. If it has a use by date, this is also a good indication of whether or not it is good to cook.
If the spring is not physically broken, it is probably still good.
if he or she still want to kiss u
you take a glass and pour your self some. then you drink it if it tasted like crap then it is still good.
If its still there after you have eaten a chewy toffie its good! If not ask for a replacement.
Stew can be spoiled and have no odor or visible signs of spoilage. It should be refrigerated within two hours of cooking and thrown out after being refrigerated for three days at the most.
if you are still good friends. Than you can tell your ex.
Apologize for what you did. If they still are mad, then they are not a good friend