Does love cause mood swings

Yes, absolutely. When you are in love or dating someone, you get into a 'honeymoon' phase, which means that all you care about is that one person. You are ignoring everything else around you. So mood swings can come when you are talking about that someone to your friends and they either insult him or make you change the subject. Those are just some examples but yes, love can cause mood swings. =]]