Answer: Cross-contamination
Explanation: it is the transfer of harmful organisms from one surface to another that is often the cause. This is especially troublesome for raw, ready-to-eat foods, such as salads or other produce.
He maybe just needs friends. If he’s popular, he might just be trying to lead you on. If he does any sweet sappy-romantic stuff, you know the answer. If you don’t like him, move on queen.