Im so heartbroken I dont know where to turn

Hi ,

4 years ago i met a man who i fell in love with . id been married previously to an abusive man who when learned of our relationship applied and won custody of my son . I moved away with him we ran a pub together for a while and then when that didnt work out we found a place to live he got a job in a bar and we lived happily ever after ... or did we.

I have another son whos now 18 .. him and my mans relationship began to decline a couple of years ago when at first was pretty gd . in the last few months its been terrible
my relationship with my man has been up and down .. early in the relationship i became preganat and we decided to keep the baby . while in labour with this child it was discovered he had given me a STD which he claims he got from his ex .. I am now infected with the HPV virus as is he .
Id found out that he had in the early days of out relationship been flirting and having cyber sex with the receptionist at the hotel he worked at when i met him . this carried on through out my pregnancy but he never in his opinion cheated on me

5 days ago he came home from work and told me he loved me .. he held me all night long before getting up for work .. when he returned 6 hours later he was angry and upset kissed our 3 year old daughter and left .

he told me he didnt love me no more .. said there was no one else but on checking his phone records for months hes been texting literally 200 x plus a day the woman he works with who is single . said he hadnt been happy for a long time

I live miles away from my family and i have not got any friends here . his family have turned against me and im very much alone .

hes off infecting more women with hpv where i will prob have to stay on my own or risk infecting someone myself .

i love him very much i always have and ive never so much as looked else where . I gave up everything for him and i thought our relationship was good .

my instinct tells me to go home to my family .. but i cant bear to take our child away its already hurting her daddy isnt here any more . but im so sad and alone here and im scared if i do take her away he will do what my ex did and take her away from me .. it wouldnt look good ive lost custody once over an i dont think i could do that again I was broken last time ..

i just feel like ending it all ... cos whos gonna notice if im gone help me please !