You cannot alter someone's thinking. The way someone thinks is purely their way.
The past progressive of think is was/were thinking. The past perfect of see is had seen.
Assuming that "past continuous" means the same thing as "past progressive", the answer is "was thinking".
they are thinking about you
The mythical statement that when you sneeze, then someone is thinking about you, is just a myth.
The past participle is thought.
This idea is pure superstition. There is no reason to believe that someone is thinking of you just because you are thinking of him or her. If someone is obsessed with another person, for example, this doesn't indicate that the other person is obsessively thinking about the first person.
It means someone is thinking about you.
remembrance; thinking about the past
Move on with life and stop thinking about the past because you can not change it.
That is a lovely thought, but it is only a sweet, sentimental story. Butterflies are insects, and are not used as communications from heaven. However, if you are a person of faith, you know that God - who is in heaven - is both thinking of and watching over you.
No you can't really feel anything if someone is thinking about you, unless you know there thinking of you and you yourself have a feeling about them or about them thinking of you. So really I myself would say no, sorry
I was thinking the same question