 Tessa , and Kirsch 's character Richie , were designed as MacLeod 's mortal companions and contacts . Tessa and MacLeod are lovers and share deep feelings for each other . Adrian Paul commented that MacLeod spent twelve years with Tessa without wanting another relationship and that " ... she was a very important part of his life " . Vandernoot thought that " ... the relationship between Tessa and MacLeod was very deep because very soon , he told her about himself ( ... ) because he trusted her , and I think trust is a very good definition of their relationship . She trusted him entirely and he trusted her . " Tessa is thus MacLeod 's only mortal lover who knows of his immortality . 
 Tessa , and Kirsch <a href='null_genetive' title='1'><mark>'s</mark></a>character Richie , <a href='uninflect' title='2'><mark>were</mark></a> designed as MacLeod <a href='null_genetive' title='3'><mark>'s</mark></a>mortal companions and contacts . Tessa and MacLeod <a href='drop_aux' title='4'><mark>are</mark></a>lovers and share deep feelings for each other . Adrian Paul commented that MacLeod spent twelve years with Tessa without wanting another relationship and that " ... she was a very important part of his life " . Vandernoot thought that " ... the relationship between Tessa and MacLeod was very deep because very soon , he told her about himself ( ... ) because he trusted her , and I think trust is a very good definition of their relationship . She trusted him entirely and he trusted her . " Tessa <a href='drop_aux' title='5'><mark>is</mark></a>thus MacLeod <a href='null_genetive' title='6'><mark>'s</mark></a>only mortal lover <a href='null_relcl' title='7'><mark>who</mark></a><a href='uninflect' title='8'><mark>knows</mark></a> of his immortality . 
Tessa , and Kirsch  character Richie , was designed as MacLeod  mortal companions and contacts . Tessa and MacLeod lovers and share deep feelins for each other . Adrian Paul commented that MacLeod spent twelve years with Tessa without wanting another relationship and dat " ... she was a very important part of his life " . Vandernoot thought that " ... the relationship between Tessa and MacLeod was very deep because very soon , he told her about himself ( ... ) cuz he trusted her , and I think trust is a very gud definition of their relationship . She trusted him entirely and he trusted her . " Tessa thus MacLeod  only mortal lover kno of his immortality .