ANSWER:

As long as she is not denying you your marital rights, this is sufficient as she is only required to lay there while you do your thing! You can advise her to lose weight with good manners and wisdom if her weight bothers you. Remember that you are also not Mr. perfect! 

You are required to lower your gaze and not socialize or mix with non-mahram women. 

I’m recently married yet unhappy about the marriage as she can’t satisfy me sexually.She gets tired very fast due to her obesity.I couldn’t make out her physical appearance well during my visit to her home before marriage as her obesity wasn’t obvious from external look.But because of intimacy issues between us,I’m losing interest in her.Due to this,I’m afraid of getting attracted to other girls.

Fiqh of Marriage, Kind Treatment of Spouses | February 12, 2020 8:48 pm
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A habitual adulterer husband continues in adultery. Advises from pious parents, elders&very pious wife did not bring change.They have one daughter&a son. Disgusted with the habit of husband,his pious wife is seeking divorce. Both sides grand parents are disturbed because of the future of grandchildren.In the interest of children, should the wife be advised not to seek divorce & bear with husband?
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If I am married to a woman who is not virgin but was regarded to be virgin before the marriage what should I do? Should I inform her family that she was not virgin or should I keep it a secret and continue with the marriage?