Why is he being like this suddenly?

Anonymous
So, there's this guy i started to get to know for around a week and a bit. He seemed interested in me but one night he broke down saying even after 5 months he still wishes to go back to his ex. I tried to not show im upset and gave him advice regarding his issue with her in the past and how he could get her back. Now the next day he still texts me and calls me randomly and he’s changed A LOT exactly overnight and his excuse was ‘how long can i wait for her? She knows i tried every month till now and she knows it hurt me how she was towards me , so im done’ Now by change i mean he’s being very interested and he’s being really nice towards me , even calling me when he’s out with his friends and talking for hours till he gets back home. I don’t really understand how can someone move so abruptly to one person to another so fast. Should i be worried that im gonna get used?
Why is he being like this suddenly?
4 Opinion