Feeling jaded...what is wrong?

Hello, I need some advice.. lately i’ve been feeling jaded.. really i mean.. i have a boyfriend who i really love.. but somehow it’s like i started to ask myself if i could love someone else like i love him.. and lots of questions about my relationship.. maybe im just “addicted to love” and my relationship is moving towards another stage where you are not all the time feeling the initial adrenalin?? so what should I do? I dont ever want to break up with him.. i just dont know how to handle these feelings.. on top of these issues i’ve been on lexapro for 2 months and about two weeks ago quitted cold turkey, since then im having strange thinkings.. is lexapro doing this to me? Also , im under lots of stress due to my law school bar exam.. what the hell is wrong with me? is it that i cant live without feeling in love ?? thats ridiculous
Help me please..!