Fall In Love Again?

Can autistic people who break off a relationship love someone again? I believe it is fear and pressure of committing to marriage, etc. and it then going wrong which made them panic otherwise the relationship was perfect and never any issues. It's like a switch has flicked and suddenly they ddon’t love me any more. In time could this change? I was worried we are getting older and did get anxious and add pressure and they got anxious.