Boyfriends may spend less time on QQ. If you want the other person to care about you, you can tell the boy directly that the boy's thinking is more direct and it is easy to hurt his feelings without guessing. Direct communication is the best solution.

Another male friend found out that you caught a cold, maybe he just saw your QQ signature, just cared about you, out of his friend's concern, not other positions. Don't speculate too much yet.

People are more sensitive when they are sick. You can divert your attention, drink more hot water, go to the drugstore to buy cold medicine and have a rest. Or go out with friends, go shopping, watch movies, and go out for a walk.