Try and try your very best to not give out mixed signals. Be clear in your intentions and your communication, however direct, brutal and honest.
An old friend I recently met told me, "You were much more stupid in your 20s, than you are now. So always keep your guard up and continue to take well informed decisions".
The thing with feeling sad now as an adult is that you can no longer bawl your guts out and eat all the icecream in the world. Instead, you bandage up and keep moving forward, pretending everything is peachy. This is right and wrong.
It's right because as an adult you have work, children, family and your own health to take care of. It's wrong because you can always feel the hurt around the corners of your brain and one day it will all blow up on your face.
Accept shitty situations and people as they are. If your questions remain unanswered, that's your answer.
Move on and keep the faith that everything will turn out A-OK in the end because, "picture abhi baaki hai mere dost", as quoted by Om Prakash Makhija in Om Shanti Om.
Of course, I had to end with a soppy hindi movie dialogue because life is soppy and messy. Let's accept that too!