I think it is natural when we first ‘fall in love’ with someone to think of them often, especially when they are giving signals back that they like us too. It’s hard to know what to read into this message…does the person like you back or is it unrequited? What is your current relationship like? If they don’t know how you feel or you know they aren’t interested, then sometimes we can spend so much more time thinking about them, perhaps with anger or sadness in there too? Usually if we start a relationship with that person, our thinking about them changes as we get to know them, and our anxiety about it being new lessens then too. Without knowing more, what generally helps when we are fixating on something, whether it’s a person or not, is to record or write down (or talk to someone else) all the things that are going round and round in our brains. This can help free up space for our other friends a family. Try the empty chair, where you imagine what you would like to say to this person and what they would respond and what you would like them to respond. This can help us ‘move on’ a bit if we feel stuck about something. But if you can, tell us a bit more so we can respond better.