OP, your insecurities do not match up with reality. Porn does not replace the gf. He might feel guilty for asking you for sex when he wants it more than you do. Or he might want to SEE something different, or try something different, on the computer. It doesn't mean he loves you any less. It doesn't mean he doesn't like you, he wants to leave you, or anything else like that.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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