Is it normal that me wanting to date and stuff variates a lot often?

Is it normal to have a short period of time like a week tops when you feel like you want to date someone, be close to someone or be admired and then after that it variates quickly just like that - you think all that stuff is very dull. The guy who you recently texted with, is boring. A while ago he was interesting. Then it variates again and no, this is not just about a one person. This always happens.