Well...
Jesus said he will never leave you nor forsake you. You have Him.
When I feel very lonely, I like to pray and read the Bible. I recently found a tiny pocketbook from Gideon's , the NT with Psalms.
When I am travelling on the bus or on a break, I read that. Anyway, don't worry too much about being the only believer. Maybe God has put you in that situation for a reason.
AND you can always talk to me!
Looking forward to more correspondence!
With much love
Your sister in Christ,
Rachel