Does anyones father of their child lie about everything... Including watching porn

Briana • 7.19.16💙4.17.18💙3.21.21🤰🏼23 Years Old ❤️
I find myself forgiving him for lying so much because i love him and i want us to have a good relationship for the sake of us and our son... But recently this past month hes lied like 3-4 times after he swore on my sons life hed quit . I cery rarely check his phone and when i do i always find something different that makes me upset to the point where im scared to even check it . well i found porno in his phone and even after i showed him what i found he made a big lie saying he dont even know what that site is and he dont watch porn no more bc he loves his family blahblahblah. But he lied time after time even though he knew i caught him . then i had to act crazy for him to admit it ... But anyone else have this problem ??