Hello from Long Island to Indiana!
First of all ticks have a numbing agent so one doesn't even feel a tick bite.. The size of a tick could be as tiny as a grain of sand.. Most people never even see them..
Ticks are not the only bugs that can infect a person, research shows that black flies, mosquitoes, fleas, etc. can infect a person...
Doctors told me I got lyme from a spider bite..
Bottom line: The "host" of most lyme bacteria is the White Footed Mouse and whatever blood sucking vector feed on these mice carry lyme bacteria.. Thus ticks are not exclusive.. I always said ticks get too much credit!
I would advise to get a free testing kit from IgeneX and your boyfriend should be tested (the kit is free but you need to get a doctor's signature for the test plus the test costs money).
Here is the website:
www.IgeneX.com
Hope that helps,
Denise