>Similar to what happened in Italian and swedish
>Similar
The details differ.
Besides, would that mean Italian is now a Germanic language? Of course it wouldn't.
This is obviously not the only sound change Frisian and English or (English and Western Germanic languages for that matter) share northern germanics do not
Here's a list of sound changes unique to the Anglo Frisian language family straight from wikipedia:
Backing and nasalization of West Germanicaandābefore a nasal consonant
Loss ofnbefore a spirant, resulting inlengtheningandnasalizationof preceding vowel
The present and preterite plurals reduced to a single form
A-fronting: WGmca,ā→æ,ǣ, even in the diphthongsaiandau(seeAnglo-Frisian brightening)
palatalizationofProto-Germanic*kand*gbefore front vowels (but not phonemicization of palatals)
A-restoration:æ,ǣ→a,āunder the influence of neighboring consonants
Second fronting: OE dialects (exceptWest Saxon) and Frisianǣ→ē
A-restoration:arestored before a back vowel in the following syllable (later in theSouthumbriandialects); Frisianæu→au→ Old Frisianā/a
OE breaking; in West Saxon palatal diphthongization follows
i-mutation followed bysyncope; Old Frisian breaking follows
Phonemicization of palatals and assibilation, followed by second fronting in parts ofWest Mercia
Smoothing and back mutation
en.m.wikipedia.org/wiki/Anglo-Frisian_languages