How can I learn to trust and love someone when I suspect everyone lies?

There was a girl in my class today, I asked her what she was doing, and she just said she was at home, and I believe she's a liar. Her Instagram followers increased from 180 to 193 in a week. When did 14 people follow her? And why did she accept follower requests after all this time? If she was staying home so much, why didn't she accept follower requests before? I don't trust people anymore.

People lie and everyone's flirting with someone. I really wish I could love someone, but I can't trust anyone. If you were in a relationship, would you trust anyone? I haven't been in a relationship yet because people aren't honest and I'm suspicious.
How can I learn to trust and love someone when I suspect everyone lies?
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