help ladies

previously I was in a relationship where my boyfriend would constantly lie to me and cheat on me but I couldn't leave him because I thought i loved him. So he continued to cheat and lie. finally I decided I'm better then that and left him I am now 3 years since I broke up with him. I've since then started dating a new guy about 8 months ago but I can't help but that think he is lying to me and cheating on me even though he hasnt done nothing for me to think that... It's just honestly what i used too.. I really wanna just be able to put my trust in him 100%. any ideas ladies?