I need advice

First let me start off by saying I love my other half very much but the problem I'm having is I think I lost my trust in him. We have had problems in the past and I forgave his mistake and we have been working on us but recently there has been some FB stalking pages made to send messages to me and my family and friends they always imply that he's being untruthful and unfaithful..every day someone texts me to tell me they got new messages I no longer have a FB page .now the problem is I have been harassed so much I now doubt myself doubt him question whether I should trust him. .these pages are made just to hurt me and I shouldn't let it bother me but it does it has damaged us I hate to admit it..I love him but sometimes I find myself questioning if I should just walk away. What if he's doing what he's accused of and I just ignore it? I wish that he had never damaged us or made choices that make it hard for me to trust him. .maybe I'm just scared to be hurt again idk I just needed to vent